Write the mechanism of the following reaction CH3CH2OH + HBr ---->
1. Write the mechanism of the following reaction CH3CH2OH + HBr ---->
substitution reaction
CH3-CH2-OH + HBr --> CH3 - CH2 - Br + H2O
I hope its helps...
2. Word equation for the reaction of astatine with iron
Jawaban:
Persamaan kata untuk reaksi astatin dengan besi
Penjelasan:
suruh apasih aku artiin aj
3. write one of the 'useful phrases' as an appropriate reaction to each of the following events from the script.
Answer:
In making an appropriate response or reaction, you need to look carefully at the expression or sentences used as well as its tone, whether it is meant to be humorous or serious one. Then, you can respond it in a creative way too, instead of just ordinary ones so long as appropriate. Here's the possible phrases to respond
- The cruel king has threatened to invade!
(Really? Then we'd better prepare ourselves. for normal reaction)
(What else is new? He's just bluffing. for unusual reaction)
- We are still alive; the soldiers are gone!
(Then we shall pray for them. They have fought bravely to protect us. (normal reaction)
(That's rather ironic for them. They should've been alive instead of us, who aren't trained for war. (uncommon reaction)
- The riddle is solved!
(At last! after a while - normal)
(Are you kidding me? what took you so long to solve such easy riddle - uncommon )
- We need a drum that sounds when nobody beats it!
(Such is impossible! - normal)
(Really? are you still in wonderland? - uncommon sardonic)
- Will the paper drum with the bee work?
(Huh, I don't get it - normal as it's unclear in meaning)
Kelas: SMP
Mapel: English
Kategori: expression and response
4. What does islam aim in the form of mechanism of economic activity
Jawaban:
•To strengthen relations between fellow Muslims
• Prevent quarrels and misunderstandings
5. The rate constant for a first-order reaction is 3.64. 10 - 2 seconds -1 at 298 k.. what is the rate constant for the reaction at 350 k if the activation energy of the reaction is 50.2 kj/mol. given: the quantity r = 8.314 j/k.mol.
Jawaban terlampir di foto ya!
#GeniuzS05
#SAYIDI
6. Tolong artikan semuanya ke bahasa indonesia1. Studies the rate at which a chemical process occurs.2. Besides information about the speed at which reactions occur, kinetics also sheds light on the reaction mechanism (exactly how the reaction occurs).3. Lichens living on rock often secrete a mixture of simple, weak organic acids that slowly react with minerals to produce complex metal–organic materials, which give the lichens some protection from invasive microorganisms4. As the concentration of reactants increases, so does the likelihood that reactant molecules will collide.5. At higher temperatures, reactant molecules have more kinetic energy, move faster, and collide more often and with greater energy.6. Speed rxn by changing mechanism.7. Rates of reactions can be determined by monitoring the change in concentration of either reactants or products as a function of time. [A] vs t 8. In this reaction, the concentration of butyl chloride, C4H9Cl, was measured at various times, "T"9. The average rate of the reaction over each interval is the change in concentration divided by the change in time:10. Note that the average rate decreases as the reaction proceeds.11. This is because as the reaction goes forward, there are fewer collisions between reactant molecules.12. A plot of concentration vs. time for this reaction yields a curve like this.13. The slope of a line tangent to the curve at any point is the instantaneous rate at that time.14. The reaction slows down with time because the concentration of the reactants decreases.15. In this reaction, the ratio of C4H9Cl to C4H9OH is 1:1.16. Thus, the rate of disappearance of C4H9Cl is the same as the rate of appearance of C4H9OH.17. What if the ratio is not 1:1?18. Only 1/2 HI is made for each H2 used.19. Each reaction has its own equation that gives its rate as a function of reactant concentrations.20. This is called its Rate LawTo determine the rate law we measure the rate at different starting concentrations.
1. Pelajari tingkat di mana proses kimia terjadi. 2. Selain informasi tentang kecepatan di mana reaksi terjadi, kinetika juga menyoroti mekanisme reaksi (tepatnya bagaimana reaksi terjadi). 3. Lumut yang hidup di batu sering mengeluarkan campuran asam organik sederhana dan lemah yang perlahan-lahan bereaksi dengan mineral untuk menghasilkan bahan logam-organik kompleks, yang memberikan lumut lichen perlindungan dari mikroorganisme invasif. 4. Saat konsentrasi reaktan meningkat, begitu pula kemungkinan bahwa molekul reaktan akan bertabrakan. 5. Pada suhu yang lebih tinggi, molekul reaktan memiliki lebih banyak energi kinetik, bergerak lebih cepat, dan bertabrakan lebih sering dan dengan energi yang lebih besar. 6. Kecepatan rxn dengan mengubah mekanisme. 7. Tingkat reaksi dapat ditentukan dengan memantau perubahan konsentrasi reaktan atau produk sebagai fungsi waktu. [A] vs t 8. Dalam reaksi ini, konsentrasi butil klorida, C4H9Cl, diukur pada berbagai waktu, "T" 9. Tingkat rata-rata reaksi atas setiap interval adalah perubahan konsentrasi dibagi dengan perubahan waktu: 10. Perhatikan bahwa tingkat rata-rata menurun saat reaksi berlangsung. 11. Ini karena ketika reaksi berlanjut, ada lebih sedikit tabrakan antara molekul reaktan. 12. Sebidang konsentrasi vs waktu untuk reaksi ini menghasilkan kurva seperti ini. 13. Kemiringan garis yang bersinggungan dengan kurva di titik mana pun merupakan tingkat seketika pada waktu itu. 14. Reaksi melambat seiring waktu karena konsentrasi reaktan menurun. 15. Dalam reaksi ini, rasio C4H9Cl ke C4H9OH adalah 1: 1. 16. Dengan demikian, tingkat penghilangan C4H9Cl sama dengan tingkat penampilan C4H9OH. 17. Bagaimana jika rasionya tidak 1: 1? 18. Hanya 1/2 HI yang dibuat untuk setiap H2 yang digunakan. 19. Setiap reaksi memiliki persamaannya sendiri yang memberikan laju sebagai fungsi konsentrasi reaktan. 20. Ini disebut Hukum Laju Untuk menentukan hukum laju kita mengukur tingkat pada konsentrasi awal yang berbeda.
7. Write the word equation for the reaction between zinc and copper sulfate.
Jawaban:
Zn + CuSO4 ⇒ ZnSO4 + Cu
Penjelasan:
Zn has oxidation number equal to +2. Cu has oxidation number equal to +2. SO4 has oxidation number equal to -2.
8. What is the excess reactant for the reaction below given that you start with 10.0 g of Al and 19 grams of oxygen?
Jawaban:
al
Penjelasan:
4 al +30 = 2 al 2o3
you need figur out wicth one has smiller molle ratio. confert both substences from grams to moles..
9. Consider the reaction for the commercial preparation of ammonia ; synthesis of ammonia (NH3) from the reaction between nitrogen and hydrogen. a) How many moles of hydrogen are needed to prepare 312 moles of ammonia? b) How many grams of hydrogen is this?
11010292928822
Penjelasan:
soriy ttayqyquq
10. explain the mechanism of conduction of electricity in a metal conductor
Jawaban:
explain the mechanism of conduction of electricity in a metal conductor = Jelaskan mekanisme penghantaran listrik pada penghantar logamPenjelasan:
Penghantar listrik (konduktor) adalah suatu material yang mudah menghantarkan arus listrik. Sifat hantarannya adalah memindahkan elektron-elektron dari satu titik kelistrikan ke titik kelistrikan lainnya secara mudah. Kegunaan utama dari penghantar listrik adalah mengalirkan arus listrik.[1] Penghantar listrik memiliki inti atom dengan elektron yang terikat secara lemah dan dapat bergerak secara bebas. Proses penghantaran listrik terjadi ketika material yang bermuatan positif dihubungkan dengan penghantar listrik. Interaksi yang timbul ialah perpindahan elektron dari penghantar listrik ke material yang bermuatan positif.[2] Pengaliaran arus listrik secara mudah melalui penghantar listrik disebabkan kandungan muatan listrik mudah bergerak saat timbul medan listrik meski dalam jumlah yang sangat kecil. Medan listrik pada penghantar bernilai nol selama tidak teraliri listrik.[3]
#Jadiin jawaban terbaik yah :)11. if the mass of the products of the reaction above was 45g,what was the mass of the reactants?
Jawaban:
karena itu bisa pakai mandiri
12. What are the products of the reaction between lithium and water ?
Jawaban:
Lithium reacts intensely with water, forming lithium hydroxide and highly flammable hydrogen. The colourless solution is highly alkalic. The exothermal reactions lasts longer than the reaction of sodium and water, which is directly below lithium in the periodic chart.
13. ammonia sulfate is the product from the reaction between ammonia and sulfuric acid.write down the chemical formula of substances involed in the reaction
[STOICHIOMETRY | X SHS]
Ammonium sulfate : (NH₄)₂SO₄
Ammonia : NH₃
Sulfuric acid : H₂SO₄
Reaction :
2NH₃ + H₂SO₄ --> (NH₄)₂SO₄ (balanced)
14. What is the main mechanism of gas movement in the respiratory zone?
Jawaban:
his name is inspiration
15. For the given reaction C5H12 + 8 O2 → 5 CO2 + 6 H2O, If the reactants C5H12 & O2 are having 2 moles an 8 moles of initial feed respectively. How many moles of C5H12 are there when the reaction completes?
Jawaban:
1 mol C5H12
Penjelasan:
pakai cara yang di gambar ya
semoga bermanfaat
16. 28. Which does NOT change with time for a first-order reaction? (A) the amount of reactant that disappears in each half- life (B) the concentration of the reactant (C) the length of each half-life (D) the rate of the reaction
Pada reaksi order pertama yang tidak mengalami perubahan adalah :
C. The length of each half-life
Pembahasan
Reaksi orde pertama adalah reaksi dalam orde menetap, laju reaksi berbanding lurus dengan konsentrasi salah satu reaktan. Reaksi orde pertama sering memiliki bentuk umum A → produk. Tingkat diferensial untuk reaksi orde pertama adalah sebagai berikut:
laju=−Δ[A]/Δt=k[A]
Jika konsentrasi A digandakan, laju reaksi menjadi dua kali lipat, jika konsentrasi A dinaikkan dengan faktor 10, laju reaksi meningkat dengan faktor 10, dan seterusnya. Karena satuan laju reaksi selalu mol per liter per detik, satuan konstanta laju orde pertama adalah detik timbal balik (s−1). Hukum laju terintegrasi untuk reaksi orde pertama dapat ditulis dalam dua cara yang berbeda: satu menggunakan eksponen dan satu menggunakan logaritma. Ingat bahwa hukum laju terintegrasi memberikan hubungan antara konsentrasi reaktan dan waktu.
Pelajari lebih lanjut
Pelajari lebih lanjut mengenai materi laju reaksi orde pertama pada link berikut :
https://brainly.co.id/tugas/6386928
#BelajarBersamaBrainly
#SPJ1
17. how is the reaction of photosynthesis?
Jawaban:
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
18. 2. A reaction between 70.0 g of copper(II) oxide and 50 mL of 2.0 M nitric acid produces copper(II) nitrate, Cu(NO3)2 and water. (a) Write the balanced chemical equation for the above reaction. (b) Determine the limiting reactant. (c) Calculate the mass of excess reactant after the reaction. (66.02 g) (d) Determine the percentage yield if the actual mass of copper(II) nitrate obtained from the reaction is 8.5 g (90.62%)
Jawaban:
a. The balanced chemical equation for the reaction above
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
b. he limiting reactant: nitric acid ([tex]HNO_{3}[/tex])
c. the mass of excess reactant after the reaction = 67,97 g
d. the percentage yield if the actual mass of copper(II) nitrate obtained from the reaction is 8.5 g = 50,47%
Penjelasan:
Persamaan reaksi dari reaksi tersebut adalah:
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
mol CuO = [tex]\frac{massa}{Mr}[/tex]
= [tex]\frac{70}{79,5}[/tex]
= 0,88 mol
mol [tex]HNO_{3}[/tex] = V x M
= 50 mL x 2 M
= 100 mmol = 0,1 mol
Pereaksi pembatas dapat ditentukan dengan membagi mol reaktan dengan keofisienya. Reaktan yang hasil baginya lebih kecil merupakan pereaksi pembatas.
[tex]\frac{mol CuO}{koef CuO}[/tex] = [tex]\frac{0,88}{1}[/tex] = 0,88
[tex]\frac{mol HNO_{3} }{koef HNO_{3} }[/tex] = [tex]\frac{0,1}{2}[/tex] = 0,05
Hasil bagi yang lebih kecil adalah [tex]HNO_{3}[/tex] jadi pereaksi pembatasnya adalah [tex]HNO_{3}[/tex]. Sehingga:
mol CuO yang bereaksi = [tex]\frac{koef CuO}{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
mol [tex]Cu(NO_{3})_{2}[/tex] hasil reaksi = [tex]\frac{koef Cu(NO_{3})_{2} }{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
mol [tex]H_{2}O[/tex] hasil reaksi = [tex]\frac{koef H_{2}O }{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
Awal : 0,88 mol 0,05 mol
Reaksi : 0,025 mol 0,05 mol 0,025 mol 0,025 mol
--------------------------------------------------------------------------------------------
Akhir : 0,855 mol - 0,025 mol 0,025 mol
Reaktan yang bersisa diakhir reaksi adalah CuO sebanyak 0,855 mol. Massa CuO = mol x Mr
= 0,855 x 79,5
= 67,97 g
[tex]Cu(NO_{3})_{2}[/tex] yang dihasilkan adalah 0,025 mol.
Massa [tex]Cu(NO_{3})_{2}[/tex] = mol x Mr
= 0,025 x 171,5
= 4,29 g
%[tex]Cu(NO_{3})_{2}[/tex] = [tex]\frac{4,29}{8,5}[/tex] x 100%
= 50,47%
Materi tentang pereaksi pembatas dapat disimak pada link:
https://brainly.co.id/tugas/40947892
#BelajarBersamaBrainly
19. Calculate the heat of reaction for combustion of C2H5OH using bond energies
Reaction C₂H₅OH + 3O₂ --> 2CO₂ + 3H₂O
Then draw the structural formulas for each molecule showing single and double bonds.
C₂H₅OH has one C-C bond, five C-H bonds, one C-O bond and one O-H bond
add up the bond energies for a mole of each of these single bonds from your bond energy chart.
Now in O₂ we have O=O double bond so add up the total bond energy for three moles of O₂. (three times the doubly bonded oxygen bond energy)
CO₂ is formed O=C=O, and you have two moles of CO₂, and four moles of C=O bonds so multiply the C=O bond energy by 4
and for H₂O, bonded H-O-H you will have 6 moles of H-O bonds, so multiply the H-O bond energy by six.
Now to get ΔH for this reaction, simply subtract the sum of the reactant bond energies from the sum of the product bond energies and you have it.
20. A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was placed in a bomb calorimeter with excess oxygen and ignited. The initial temperature of the calorimeter was 25.000 °C and its total heat capacity was 97.13 kJ °C-1. The reaction raised the temperature of the calorimeter to 27.282 °C. (a) Write the balanced chemical equation for the reaction in the calorimeter. (b) How many joules were liberated in this reaction? (c) What is the heat of reaction of propane with oxygen expressed in kilojoules per mole of C3H8 burned?
Kimia Kelas XI
Termokimia
Mohon koreksinya ya! Semoga membantu :) Tetap semangatt ^^
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