1

JEE Main 2021 (Online) 18th March Evening Shift

Numerical

+4

-1

The gas phase reaction $$2A(g) \rightleftharpoons {A_2}(g)$$ at 400 K has $$\Delta$$G

The equilibrium constant K

[Use : R = 8.3 J mol

[antilog ($$-$$0.3) = 0.501]

^{o}= + 25.2 kJ mol^{-1}.The equilibrium constant K

_{C}for this reaction is ________ $$\times$$ 10^{$$-$$2}. (Round off to the Nearest Integer).[Use : R = 8.3 J mol

^{$$-$$1}K^{$$-$$1}, ln 10 = 2.3 log_{10}2 = 0.30, 1 atm = 1 bar][antilog ($$-$$0.3) = 0.501]

Your input ____

2

JEE Main 2021 (Online) 17th March Evening Shift

Numerical

+4

-1

Consider the reaction

$$N_{2}O_{4}\left( g\right) \rightleftharpoons 2NO_{2}\left( g\right) $$

The temperature at which K

$$N_{2}O_{4}\left( g\right) \rightleftharpoons 2NO_{2}\left( g\right) $$

The temperature at which K

_{C}= 20.4 and K_{P}= 600.1, is ____________ K. (Round off to the Nearest Integer). [Assume all gases are ideal and R = 0.0831 L bar K^{$$-$$1}mol^{$$-$$1}]Your input ____

3

JEE Main 2021 (Online) 17th March Morning Shift

Numerical

+4

-1

0.01 moles of a weak acid HA (K

[Neglect volume change on adding HA. Assume degree of dissociation <<1 ]

_{a}= 2.0 $$\times$$ 10^{$$-$$6}) is dissolved in 1.0 L of 0.1 M HCl solution. The degree of dissociation of HA is __________ $$\times$$ 10^{$$-$$5}(Round off to the Nearest Integer).[Neglect volume change on adding HA. Assume degree of dissociation <<1 ]

Your input ____

4

JEE Main 2021 (Online) 16th March Morning Shift

Numerical

+4

-1

For the reaction $$A(g) \rightleftharpoons B(g)$$ at 495 K, $$\Delta$$

If we start the reaction in a closed container at 495 K with 22 millimoles of A, the amount of B in the equilibrium mixture is ____________ millimoles.

(Round off to the Nearest Integer). [R = 8.314 J mol

_{r}G$$^\circ$$ = $$-$$9.478 kJ mol^{$$-$$1}.If we start the reaction in a closed container at 495 K with 22 millimoles of A, the amount of B in the equilibrium mixture is ____________ millimoles.

(Round off to the Nearest Integer). [R = 8.314 J mol

^{$$-$$1}K^{$$-$$1}; ln 10 = 2.303]Your input ____

Questions Asked from Chemical Equilibrium (Numerical)

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