In aqueous solution, the ionization constants for carbonic acid are, K 1 = 4 .2 × 10 - 7 and K 2 = 4 .8 × 10 - 11 Select the correct statement for a saturated 0 . 034 M solution of the carbonic acid.

The concentration of H + and HCO 3 - are approximately equal

The concentration of C O 3 2 - is 0 . 034 M

The concentration of C O 3 2 - is greater than that of H C O 3 -

The concentration of H + is double that of C O 3 2 -

EASY

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The enthalpy of neutralisation of a weak acid is less than that of a strong acid. The difference of the latter from the former is known as enthalpy of ionisation of the weak acid.

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Important Questions on Acids and Bases

HARD

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

The initial rate of hydrolysis of methyl acetate

(1 M)

by a weak acid

(HA, 1 M)

1 / 100^{th}

of that by a strong acid

(HX, 1 M)

, at

25 ° C

. The

K_{a}

HA

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

What are the factors that determine the strength of a base?

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

10 mL

0.1 M {CH}_{3} {COO}^{-} {Na}^{+}

is mixed with

11 mL

0.1 M HCl

of the concentration of

{CH}_{3} {COO}^{-}

ion at equilibrium is, (take

K_{a} ({CH}_{3} COOH) = 10^{- 5}

)

HARD

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Which statement best describes, why

1 -

propyne can be deprotonated by ethyl anion?

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

The

p H

0.1 M

solution of cyanic acid

(H C N O)

2.34

. Calculate the ionization constant of the acid and its degree of ionization in the solution.

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Electrical conductivity can be used to predict the strength of Acid and Base.

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

In aqueous solution, the ionization constants for carbonic acid are,

K_{1} = 4 .2 \times 10^{- 7}

and

K_{2} = 4 .8 \times 10^{- 11}

Select the correct statement for a saturated

0.034 M

solution of the carbonic acid.

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Which

0.10 mol {dm}^{- 3}

solution would have the highest conductivity?

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

How does strength of acid affect enthalpy of neutralization?

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

The degree of ionization of

0.4 M

Acetic acid will be

(K_{a} = 1.8 \times 10^{- 5})

HARD

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

What is the

pH

of a millimolar solution of ammonium hydroxide which is

20 %

dissociated?

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

The ionization constant of phenol is

1.0 \times 10^{10} .

What is the concentration of phenolate ion in

0.05 M

solution of phenol? What will be its degree of ionization if the solution is also

0.01 M

in sodium phenolate?

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

The reactions of strong and weak acids with metals, metal hydrogencarbonates and metal carbonates will produce a gas always.

HARD

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Percentage ionization of a weak acid can be calculated by using the formula

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

How conductivity is related to strength of acids?

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

If dissociation constant of ammonia is

10^{- 5}

, its

{p K}_{b}

and

{p K}_{a}

values are respectively

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

If a

0.1 M

solution of

HCN

0.01 %

ionised, the ionisation constant for

HCN

EASY

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Cotyledons are also called-

MEDIUM

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Write the different parameters that determine the strength of a base.

HARD

Chemistry>Inorganic Chemistry>Acids and Bases>Strong and Weak Acids and Bases

Explain how the rate of reaction of acids with metals, metal carbonates and bicarbonates vary depending on the strength of acid?

The enthalpy of neutralisation of a weak acid is less than that of a strong acid. The difference of the latter from the former is known as enthalpy of ionisation of the weak acid.

Important Questions on Acids and Bases

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