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JEE Main || Physical Chemistry || Super Quiz 8

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Question 1

The exothermic formation of ClF₃ is represented by the equation
Cl_{2 (g)} + 3F_{2 (g)}

2ClF_{3 (g}; ΔH_r = - 329 kJ
Which of the following will increase the quantity of ClF₃ in an equilibrium mixture of Cl₂, F₂ and ClF₃?

Question 2

Hydrogen ion concentration in mol / L in a solution of pH = 5.4 will be

Question 3

For a particular reversible reaction at temperature T, ∆H and ∆S were found to be both +ve. If T_eis the temperature at equilibrium, the reaction would be spontaneous when

Question 4

Amount of oxalic acid present in a solution can be determined by its titration with KMnO₄ solution in the presence of H₂SO₄. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl

Question 5

For the following three reactions a, b and c, equilibrium constants are given:
a) CO(g) + H₂O(g) ⇌  CO₂(g) + H₂(g) ; K₁
b)CH₄+ H₂O(g)⇌  CO(g) + 3H₂(g) ; K₂
c) CH₄+ 2H₂O(g)⇌  CO₂(g) + 4H₂(g) ; K₃
Which of the following relations is correct?

Question 6

The equilibrium constant for the reaction
SO₃(g)

SO₂(g) +

is K_c = 4.9 × 10^–2.The value of K_cfor the reaction,2SO₂(g)+ O₂(g)

2 SO₃(g)
will be

Question 7

What is the equilibrium expression for the reaction P_4(s) +5O_2(g)

P₄O_10(s)?

Question 8

For the reaction, CO(g) + Cl₂(g)

COCl₂(g) the

is equal to

Question 9

The standard e.m.f of a cell, involving one electron change is found to be 0.591 V at 25 °C. The equilibrium constant of the reaction is (F = 96,500 C mol^-1: R = 8.314 JK^-1 mol^-1)

Question 10

In which of the following reactions, an increase in the volume of the container will favor the formation of products?

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Sep 18JEE & BITSAT