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Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium Mock Test for JEE

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Part of Equilibrium in JEE Main Chemistry.

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Q1ChemistryUnit 6: Equilibrium

One mole of ethanol is treated with one mole of ethanoic acid at

25 .

One-forth of the acid changes into ester at equilibrium. The equilibrium constant for the reaction will be:

Q2ChemistryUnit 6: Equilibrium

2 moles of

P C l_{5}

when heated in a closed vessels of 2 litre capacity at equilibrium

40 \%

P C l_{5}

dissociated in

P C l_{3}

and

C l_{2} .

What is the value of the equilibrium constant?

Q3ChemistryUnit 6: Equilibrium

56 \mathrm{g}

of nitrogen and

8 \mathrm{g}

of hydrogen gas are heated in a closed vessel. At equilibrium, 34 g of ammonia are present. The equilibrium number of moles of nitrogen, hydrogen and ammonia are respectively:

Q4ChemistryUnit 6: Equilibrium

A+B \rightleftharpoons C+D, K_{c}

for this reaction is 10. If 1,2,3,4 mole/litre of

A, B, C

and

D

respectively are present in a container at

25^{\circ} C,

the direction of reaction will be:

Q5ChemistryUnit 6: Equilibrium

For the system

\boldsymbol{A}_{(g)}+\mathbf{2} \boldsymbol{B}_{(\boldsymbol{g})} \rightleftharpoons \boldsymbol{C}_{(g)},

the equilibrium concentrations are

\boldsymbol{A}=\mathbf{0 . 0 6} \boldsymbol{m o l} \boldsymbol{L}^{-1}

\boldsymbol{B}=\mathbf{0 . 1 2} \boldsymbol{m o l} \boldsymbol{L}^{-1}

\boldsymbol{C}=\mathbf{0 . 2 1 6} \boldsymbol{m o l} \boldsymbol{L}^{-1}

Then

K_{c}

for the reaction is

Q6ChemistryUnit 6: Equilibrium

A flask containing 0.5 atm pressure of

A_{2}(g),

some solid

A B

added into flask which undergoes dissociation according to :

\boldsymbol{2} \boldsymbol{A} \boldsymbol{B}(\boldsymbol{s}) \rightleftharpoons \boldsymbol{A}_{2}(\boldsymbol{g})+\boldsymbol{B}_{2}(\boldsymbol{g})

\boldsymbol{K}_{\boldsymbol{p}}=\mathbf{0 . 0 6} \boldsymbol{a t m}^{2} .

The total pressure (in atm) at equilibrium is :

Q7ChemistryUnit 6: Equilibrium

What is the partial pressure (atm) of HI in the equilibrium mixture?

Q8ChemistryUnit 6: Equilibrium

Which is not a reversible reaction?

Q9ChemistryUnit 6: Equilibrium

The equilibrium constant

K_{p}(\text { in atm })

for the reaction is 9 at 7 at

m

and

300 K

\boldsymbol{A}_{2}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{B}_{2}(\boldsymbol{g})+\boldsymbol{C}_{2}(\boldsymbol{g})

Calculate the average molar mass (in

\mathrm{gm} / \mathrm{mol}

) of an equilibrium mixture: Given Molar of

A_{2}, B_{2}

and

C_{2}

are 70,49 \& 21 gm/ mol respectively.

Q10ChemistryUnit 6: Equilibrium

At some temperature and under a pressure of 4 atm,

P C l_{5}

10 \%

dissociated. Calculate the pressure at which

P C l_{5}

will be

20 \%

dissociated, temperature remaining same.

Q11ChemistryUnit 6: Equilibrium

For the equilibrium

N_{2}+3 H_{2} \rightleftharpoons

\mathbf{2} N \boldsymbol{H}_{3}, \boldsymbol{K}_{6}

1000 \mathrm{K}

\mathbf{2 . 3 7} \times \mathbf{1 0}^{-3}

Equilibrium

\left[N_{2}\right]=2 . M\left[H_{2}\right]=3 M

the concentration of

\boldsymbol{N} \boldsymbol{H}_{3}

is:

Q12ChemistryUnit 6: Equilibrium

90^{\circ} C,

the following equilibrium is established

\boldsymbol{H}_{2}(\boldsymbol{g})+\boldsymbol{S}(s) \rightleftharpoons \boldsymbol{H}_{2} \boldsymbol{S}(\boldsymbol{g}) \boldsymbol{K}_{\boldsymbol{p}}=\mathbf{6 . 8} \times

\mathbf{1 0}^{\mathbf{2}}

If 0.2 mol of hydrogen and 1.0 mol of sulphur are heated to

90^{\circ} \mathrm{C}

in a 1.0 litre vessel, what will be the partial pressure of

\boldsymbol{H}_{2} \boldsymbol{S}

at equilibrium?

Q13ChemistryUnit 6: Equilibrium

8 g

mol of

P C l_{5}

heated in a closed vessel of

10 L

capacity and

25 \%

of its dissociates into

P C l_{3}

and

C l_{2}

at the equilibrium then value of

\boldsymbol{K}_{\boldsymbol{p}}

will be equal to:

Q14ChemistryUnit 6: Equilibrium

The virial equation for 1 mole of a real gas is written as:

P V=R T

\left[1+\frac{A}{V}+\frac{B}{V^{2}}+\frac{C}{V^{3}}+\ldots . . . . . . . . . .

to the higher \right. power of

n]

Where

A, B

and

C

are known as virial coefficients. If Vander Waal's equation is written in virial form, then what will be the value of B?

Q15ChemistryUnit 6: Equilibrium

For

\boldsymbol{X} \boldsymbol{Y}_{\mathbf{2}(\boldsymbol{g})} \rightleftharpoons \boldsymbol{X} \boldsymbol{Y}_{(\boldsymbol{g})}+\boldsymbol{Y}_{(\boldsymbol{g})},

intially 1 mole each of

X Y_{2}

and

y

are present in 10L flask at 500mm.lf the equilibrium pressure of

\mathrm{XY}

150 \mathrm{mm}, K_{p}

is?

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