SATHEE: Solutions Question 248

Solutions Question 248

Question: Henry’s law constant for $N_{2}$ at 310 K is 82.35 kbar. $N_{2}$ exerts a partial pressure of 0.840 bar. If $N_{2}$ gas is bubbled through water at 293 K, then the number of millimoles of $N_{2}$ that will dissolve in 1 L of water is

Options:

A) $0.0716$

B) $1.30 \times 10^{- 5}$

C) $1.25 \times 10^{- 2}$

D) 0.0555

Show Answer

Answer:

Correct Answer: D

Solution:

Henry’s law constant is in the unit of pressure, hence we use relation $p = K_{H} χ_{N_{2}}$

$χ_{N_{2}} = \frac{p}{K_{H}} = \frac{0.840, b a r}{82.35 \times 10^{3} b a r} = 1.0 \times 10^{- 5}$ 1 L $H_{2} O = 100 m L, H_{2} O$

$= 1000, g, H_{2} O (d = 1, g, m L^{- 3})$

$∴$ Moles of $H_{2} O = \frac{1000}{18} = 55.5$ moles Let the number of moles of nitrogen be n Then $χ_{N_{2}} = \frac{n}{n + 55.5} \approx \frac{n}{55.5}$ (since, n is very small)

$∴ n = 55.5 \times 1.0 \times 10^{- 5}$

$= 5.55 \times 10^{- 4} m o l = 5.55 \times 10^{- 4} \times 1000 m m o l$

$= 5.55 \times 10^{- 2}$ millimole $= 0.0555$ millimole

Solutions Question 248

Question: Henry’s law constant for $N_{2}$ at 310 K is 82.35 kbar. $N_{2}$ exerts a partial pressure of 0.840 bar. If $N_{2}$ gas is bubbled through water at 293 K, then the number of millimoles of $N_{2}$ that will dissolve in 1 L of water is

Options:

Answer:

Solution:

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Solutions Question 248

Question: Henry’s law constant for N2 at 310 K is 82.35 kbar. N2 exerts a partial pressure of 0.840 bar. If N2 gas is bubbled through water at 293 K, then the number of millimoles of N2 that will dissolve in 1 L of water is

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: Henry’s law constant for $N_{2}$ at 310 K is 82.35 kbar. $N_{2}$ exerts a partial pressure of 0.840 bar. If $N_{2}$ gas is bubbled through water at 293 K, then the number of millimoles of $N_{2}$ that will dissolve in 1 L of water is