Chem Equ i l l

IIT JEE 2015 Questions › Physical Chemistry questions › Chem Equ i l l

The diagram shows the rcn. profile of a typical rcn

Rctnts.>< prods

Which of the following changes would cause both of the rate consts k₁ & k_-1 to be increased

a) Introducing a catalyst
b)heating the equill mix.
c)Cooling the mix.
d)Increasing the conc. of the reactions

More than one option is correct!!!!!

#Chemistry #Physical Chemistry

UP 0 DOWN 0 0 6
Post on FacebookPost anonymously?

6 Answers

24

eureka123 ·2009-10-26 05:53:59

What is k_-1?

UP 0 DOWN 0
Post on FacebookPost anonymously?

4

UTTARA ·2009-10-26 08:45:54

k value for forward rcn is k & value for backward rcn is k_-1

These 2 had to be placed abv & below the arrow marks connecting rctnts & prods respectively

But i din't know how to :(

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Rocky Crazy ·2009-10-26 21:15:33

B and C will b the correct answers..

I think..

UP 0 DOWN 0
Post on FacebookPost anonymously?

106

Asish Mahapatra ·2009-10-26 21:36:37

the answer is (a) i think

UP 0 DOWN 0
Post on FacebookPost anonymously?

4

UTTARA ·2009-10-27 02:22:02

Answer is A & B

But i want the explanation plz!!!!

UP 0 DOWN 0
Post on FacebookPost anonymously?

1357

Manish Shankar ·2009-10-27 02:44:02

equilibrium constant, K=k₁/k_-1

adding a catalyst increases the rate of both the forward and backward reaction
i.e. k₁ and k_-1 increases but K remains constant

rate constant from arrhenius equation
r=ke^-Ea/RT

So heating means increasing the temperature

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω