Henry's law constant for CO 2 in water is 1 . 67 × 10 8 Pa at 298 K . Calculate the quantity of CO 2 in 500 ml of soda water when packed under 2 . 5 atm CO 2 pressure at 298 K .

Given, Henry's law constant ( K H ) = 1 . 67 × 10 8 Pa Partial pressure of dissolved gas ( P CO 2 ) = 2 . 5 atm = 2 . 5 × 101325 Pa x co 2 = P co 2 K H = 2 . 5 × 101325 1 . 67 × 10 8 = 1 . 517 × 10 - 3 Number moles of water = 500 18 = 27 . 78 moles n H 2 O = 27 . 78 moles X CO 2 = n CO 2 n CO 2 + n H 2 O = n CO 2 n H 2 O = n CO 2 27 . 78 n CO 2 = X CO 2 × 27 . 78 = 0 . 0422 mol

Henry’s law is a gas law which states that at the amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid when the temperature is kept constant. The constant of proportionality for this relationship is called Henry’s law constant (usually denoted by ‘k H ‘). The mathematical formula of Henry’s law is given by: P ∝ C ( or ) P = k H × C . Where, ‘P’ denotes the partial pressure of the gas in the atmosphere above the liquid. ‘C’ denotes the concentration of the dissolved gas. ‘k H ’ is the Henry’s law constant of the gas.

Henry’s law states that at the amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid when the temperature is kept constant. The constant of proportionality for this relationship is called Henry’s law constant (usually denoted by ‘k H ‘). The mathematical formula of Henry’s law is given by: P ∝ C ( or ) P = k H × C . Where, ‘P’ denotes the partial pressure of the gas in the atmosphere above the liquid. ‘C’ denotes the concentration of the dissolved gas. ‘k H ’ is the Henry’s law constant of the gas.

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$H_{2} S$ is a toxic gas used in qualitative analysis. If solubility of $H_{2} S$ in water at $S T P$ is $0.195 m$ . What is the value of $K_{H}$ ?

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Important Questions on Solutions

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

The values of the Henry's law constant of

Ar, {CO}_{2}, {CH}_{4}

and

O_{2}

in water at

25 ° C

are

40.30, 1.67, 0.41

and

34.86 kbar

, respectively. The order of their solubility in water at the same temperature and pressure is

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

10.30 m g

O_{2}

is dissolved into a liter of sea water of density

1.03 g / m L

. The concentration of

O_{2}

in ppm is _____________.

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

{CO}_{2}

and

{CH}_{4}

gases were bubbled through two different one litre water flasks at the same partial pressure of

P

bar at

298 K

. If the Henry's law constants of

{CO}_{2}

and

{CH}_{4}

gases at

298 K

are

1.64, 0.41 k

bar respectively, the mole ratio of

{CO}_{2}

and

{CH}_{4}

gases dissolved in one litre water is

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

Which one of the following statements regarding Henry's law is not correct?

HARD

Chemistry>Physical Chemistry>Solutions>Solubility

The number of correct statement/s involving equilibria in physical processes from the following is ________

(A) Equilibrium is possible only in a closed system at a given temperature.

(B) Both the opposing processes occur at the same rate.

(D) For dissolution of solids in liquids, the solubility is constant at a given temperature.

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

The oxygen dissolved in water exerts a partial pressure of $20 kPa$ in the vapour above water. The molar solubility of oxygen in water is ______ $\times 10^{- 5} mol {dm}^{- 3} .$

(Round off to the Nearest Integer).

[Given : Henry's law constant $= K_{H} = 8.0 \times 10^{4} kPa$ for $O_{2} .$ Density of water with dissolved oxygen $= 1.0 kg {dm}^{- 3}$ ]

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

State and explain Henry's law.

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

Henry's law constant for

{CO}_{2}

in water is

1.67 \times 10^{8} Pa

298 K

. Calculate the quantity of

{CO}_{2}

500 ml

of soda water when packed under

2.5 atm

{CO}_{2}

pressure at

298 K .

HARD

Chemistry>Physical Chemistry>Solutions>Solubility

Solubility of which among the following solids in water changes slightly with temperature?

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

The solubility of

N_{2}

in water at

300 K

and

500 torr

partial pressure is

0 .01 g L^{- 1} .

The solubility (in

{g L}^{- 1}

) at

750 torr

partial pressure is:

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

Give two applications of Henry's Law.

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

State Henry's law.

HARD

Chemistry>Physical Chemistry>Solutions>Solubility

With the help of Henrys law, explain the medical condition known as bends.

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

The solubility of pure oxygen in water at

20 ° C

and

1.0

atmosphere pressure is

1.38 \times 10^{- 3}

mol/litre. What will be the concentration of oxygen at

2 θ ° C

and partial pressure of

0.21

atmosphere?

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

If nitrogen gas is passed in water at

293 K

, then how many milli mole

N_{2}

gas will be soluble in one litre water? The partial pressure of

N_{2}

0.987 bar

and the value of Henry's law constant

K_{H}

293 K

76.48 bar

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

Give the definition of solubility of a substance.

MEDIUM

Chemistry>Physical Chemistry>Solutions>Solubility

State Henry’s law and write its important application.

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

For the solution of the gases

w, x, y

and

z

in water at

298 K,

the Henry's law constants

(K_{H})

are

0.5, 2, 35

and

40 k b a r,

respectively. The correct plot for the given data is:

EASY

Chemistry>Physical Chemistry>Solutions>Solubility

State Henry's law.

HARD

Chemistry>Physical Chemistry>Solutions>Solubility

The thermal dissociation equilibrium of

{CaCO}_{3} (s)

is studied under different conditions.

{CaCO}_{3} (s) ⇌ CaO (s) + {CO}_{2} (g)

For this equilibrium, the correct statement(s) is/are

H2S is a toxic gas used in qualitative analysis. If solubility of H2S in water at STP is 0.195 m. What is the value of KH?

Important Questions on Solutions

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$H_{2} S$ is a toxic gas used in qualitative analysis. If solubility of $H_{2} S$ in water at $S T P$ is $0.195 m$ . What is the value of $K_{H}$ ?