Question # 1

The solubility product of AgCl is 2.0 x 10^-10mole ²dm^-6. The maximum concentration of Ag⁺ions in the solution is

Choose an answer

2.0 x 10^-10mole dm^-3

1.41 x 10^-5mole dm^-3

1.0 x 10^-10

4.0 x 10^-20mole dm^-3

N₂3H₂⇌ 2NH₃

_{Which of the following change will favorthe formation of more}NH₃at equilibrium in above reaction :

Choose an answer

By adding NH_3.

By removingH_2.

By decreasing pressure.

By increasing pressure.

For the above reaction the relationship b/w k_c and k_p will be :

Choose an answer

K_p = K_cRT

Kp = K_c(RT)_-1

K_p = K_c(RT)_-2

K_c = K_p

In a lime kiln, to get higher yield of CO₂, the measure that can be taken is

Choose an answer

To main high temperature

To pump out CO₂

To remove Cao

To add more CaCO₃

A solution of NaOH has pH = 13, then concentration of NaOH is

Choose an answer

10^-13M

10¹³M

10^-1M

10⁺¹M

Which one of the following has no units of its K_cvalue

Choose an answer

Low pressure

High pressure

High temperature

High concentration of SO₂

At certain temperature, 50% of HI is dissociated into H₂and I₂the equilibrium constant is

Choose an answer

1.0

3.0

0.5

0.25

The concentration of reactants is increased by x, then equilibrium constant K becomes

Choose an answer

ln K/x

K/x

K + x

K

The rate of a chemical reaction is directly;y proportional to product of molar concentration of reaction substance it is called :

Choose an answer

Low of conservation of energy.

Law of mass action.

Rate law .

Active mass rule.

The pH of 10^-3mole dm^-3of an aqueous solution of H₂SO₄is

Choose an answer

3.0

2.7

2.0

1.5

Choose an answer

Forward reaction is favoured

Backward reaction is favoured

No effect

None of the above

Choose an answer

K_p> K_c

K_c> K_p

K_p= K_c

None of these

K_bfor NH₄OH is 1.81 x 10^-5, then K_avalue of its conjugate base is

Choose an answer

1.81 x 10⁺⁵

1.81 x 10^-9

5.5 x 10^-9

5.5 x 10^-10

Choose an answer

HF is stable and does not decompose even at 2000°C

HF is stable and slowly decomposes at 2000°C

HF is strong acid

HF produces equal moles of hydrogen and fluorine

Choose an answer

Moles per dm³

Partial pressures

Number of moles

Mole fractions

In 1000 molecules of 0.001 M acetic acid the number of H⁺ions is 12.6, then its percentage of ionization is

Choose an answer

1.33%

1.26%

12.6

1%

Choose an answer

The value of K_pfalls with rise in temperature

The value of K_pfalls with increasing pressure

Addition of V₂O₅catalyst increase the concentration of SO₃

The value of K_pis equal to K_c

Choose an answer

Le-chatlier's principle

Only adding catalyst

Decreasing pressure

Decreasing temperature

Choose an answer

Increase in concentration of 1

Decrease in concentration of I₂

Increase in temperature

Increase in total pressure

The state of equilibrium refers to

Choose an answer

State of rest

Dynamic state

Stationary state

State of inertness

Choose an answer

High temperature

Low temperature

Low pressure

High pressure

2SO₂ + O₂ ⇌ 2SO₂H= 188KJ mole^-1

Which statement about following equilibrium is correct :

Choose an answer

The value ofK_pfalls with arise in temperature.

The value ofK_pis equal tok_c.

The value ofK_pfalls with the increase pressure.

Adding V₂O₅ catalyst increase the equilibrium yield of Sulphur trioxide.

K_bvalue of NH₄OH is 1.81 x 10^-5and its conjugate acid has K_a= 5.7 x 10^-10pKb of the base is 4.74, pKa of its conjugate acid is

Choose an answer

-4.74

4.74

10

9.26

The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is

Choose an answer

0.5

1.5

2.5

2.0

Law of mass action states that rate of chemical reaction is directly proportional to the product of active masses of the reactants. The term active mass means

Choose an answer

Mass in grams converted to products

Number of moles

Number of moles per dm³of reactants

Total pressures of the reactants

Choose an answer

0.60

1.67

0.66

2.6

The solubility of KCIO₃salt in water is decreased by adding

Choose an answer

NaCIO₃

NaCI

KCIO₄

KCI

K_avalue of HF acid is 6.7 x 10^-15the acid is a

Choose an answer

Weak acid

Moderately strong acid

Strong acid

Very weak acid

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled then the equilibrium constant will

Choose an answer

Also be doubled

Be halved

Becomes one fourth

Remains the same

More Classes

Other Links

ECAT Chemistry Chapter 8 Chemical Equilibrium Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer