1

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 ____

2

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 ____

3

JEE Main 2021 (Online) 26th February Morning Shift

Numerical

+4

-1

A homogeneous ideal gaseous reaction $$A{B_{2(g)}} \rightleftharpoons {A_{(g)}} + 2{B_{(g)}}$$ is carried out in a 25 litre flask at 27$$^\circ$$C. The initial amount of AB

[R = 0.08206 dm

_{2}was 1 mole and the equilibrium pressure was 1.9 atm. The value of K_{p}is x $$\times$$ 10^{$$-$$2}. The value of x is _________. (Integer answer)[R = 0.08206 dm

^{3}atm K^{$$-$$1}mol^{$$-$$1}]Your input ____

4

JEE Main 2021 (Online) 24th February Morning Shift

Numerical

+4

-1

The stepwise formation of $${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$ is given below:

The value of stability constants K

The overall equilibrium constants for dissociation of $${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$ is x $$ \times $$ 10

The value of x is ________. (Rounded off to the nearest integer)

The value of stability constants K

_{1}, K_{2}, K_{3}and K_{4}are 10^{4}, 1.58 x 10^{3}, 5 x 10^{2}and 10^{2}respectively.The overall equilibrium constants for dissociation of $${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2 + }}$$ is x $$ \times $$ 10

^{-12}.The value of x is ________. (Rounded off to the nearest integer)

Your input ____

Questions Asked from Chemical Equilibrium (Numerical)

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