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CHXII05:SURFACE CHEMISTRY

320809 Which gas will be adsorbed on a solid to greater extent?

1 A gas having non polar molecule

2 A gas having the highest critical temperature

(T_{c})

3 A gas having the lowest critical temperature

4 A gas having the highest critical pressure

CHXII05:SURFACE CHEMISTRY

320810 In an adsorption experiment, a graph between $\log (x / m)$ versus $\log P$ was found to be linear with a slope of $45^{\circ}$ . The intercept on the $y$ axis was found to be 0.301 . Calculate the amount of the gas adsorbed per gram of charcoal under a pressure of 3.0 atm .

1 6

2 4

3 1

4 8

Explanation:

$\log \frac{x}{m} = \log K + \frac{1}{n} \log P$
$∴$ Plot of $\log \frac{x}{m}$ versus $\log P$ is linear with slope $= \frac{1}{n}$ and intercept $= \log K$
Thus $\frac{1}{n} = \tan θ = \tan 45^{\circ} = 1$ or $n = 1$
$\log K = 0.301$ or $K = antilog 0.301 = 2$
At $P = 3$ atm
$\frac{x}{m} = K P^{1 / n} = 2 \times (3)^{1} = 6$

CHXII05:SURFACE CHEMISTRY

320811 In Langmuir's model of adsorption of a gas on a solid surface

1 The mass of gas striking a given area of surface is proportional to the pressure of the gas

2 The adsorption at a single site on the surface may involve multiple molecules at the same time

3 The rate of dissociation of adsorbed molecules from the surface does not depend on the surface covered

4 The mass of gas striking a given area of surface is independent of the pressure of the gas

Explanation:

According to Langmuir adsorption isotherm, $(x/m) α P$

CHXII05:SURFACE CHEMISTRY

320812 The gas that is adsorbed to a larger extent on charcoal is

1

H_{2}

2

{CO}_{2}

3

CO

4

{NH}_{3}

CHXII05:SURFACE CHEMISTRY

320809 Which gas will be adsorbed on a solid to greater extent?

1 A gas having non polar molecule

2 A gas having the highest critical temperature

(T_{c})

3 A gas having the lowest critical temperature

4 A gas having the highest critical pressure

CHXII05:SURFACE CHEMISTRY

320810 In an adsorption experiment, a graph between $\log (x / m)$ versus $\log P$ was found to be linear with a slope of $45^{\circ}$ . The intercept on the $y$ axis was found to be 0.301 . Calculate the amount of the gas adsorbed per gram of charcoal under a pressure of 3.0 atm .

1 6

2 4

3 1

4 8

Explanation:

$\log \frac{x}{m} = \log K + \frac{1}{n} \log P$
$∴$ Plot of $\log \frac{x}{m}$ versus $\log P$ is linear with slope $= \frac{1}{n}$ and intercept $= \log K$
Thus $\frac{1}{n} = \tan θ = \tan 45^{\circ} = 1$ or $n = 1$
$\log K = 0.301$ or $K = antilog 0.301 = 2$
At $P = 3$ atm
$\frac{x}{m} = K P^{1 / n} = 2 \times (3)^{1} = 6$

CHXII05:SURFACE CHEMISTRY

320811 In Langmuir's model of adsorption of a gas on a solid surface

1 The mass of gas striking a given area of surface is proportional to the pressure of the gas

2 The adsorption at a single site on the surface may involve multiple molecules at the same time

3 The rate of dissociation of adsorbed molecules from the surface does not depend on the surface covered

4 The mass of gas striking a given area of surface is independent of the pressure of the gas

Explanation:

According to Langmuir adsorption isotherm, $(x/m) α P$

CHXII05:SURFACE CHEMISTRY

320812 The gas that is adsorbed to a larger extent on charcoal is

1

H_{2}

2

{CO}_{2}

3

CO

4

{NH}_{3}

CHXII05:SURFACE CHEMISTRY

320809 Which gas will be adsorbed on a solid to greater extent?

1 A gas having non polar molecule

2 A gas having the highest critical temperature

(T_{c})

3 A gas having the lowest critical temperature

4 A gas having the highest critical pressure

CHXII05:SURFACE CHEMISTRY

320810 In an adsorption experiment, a graph between $\log (x / m)$ versus $\log P$ was found to be linear with a slope of $45^{\circ}$ . The intercept on the $y$ axis was found to be 0.301 . Calculate the amount of the gas adsorbed per gram of charcoal under a pressure of 3.0 atm .

1 6

2 4

3 1

4 8

Explanation:

$\log \frac{x}{m} = \log K + \frac{1}{n} \log P$
$∴$ Plot of $\log \frac{x}{m}$ versus $\log P$ is linear with slope $= \frac{1}{n}$ and intercept $= \log K$
Thus $\frac{1}{n} = \tan θ = \tan 45^{\circ} = 1$ or $n = 1$
$\log K = 0.301$ or $K = antilog 0.301 = 2$
At $P = 3$ atm
$\frac{x}{m} = K P^{1 / n} = 2 \times (3)^{1} = 6$

CHXII05:SURFACE CHEMISTRY

320811 In Langmuir's model of adsorption of a gas on a solid surface

1 The mass of gas striking a given area of surface is proportional to the pressure of the gas

2 The adsorption at a single site on the surface may involve multiple molecules at the same time

3 The rate of dissociation of adsorbed molecules from the surface does not depend on the surface covered

4 The mass of gas striking a given area of surface is independent of the pressure of the gas

Explanation:

According to Langmuir adsorption isotherm, $(x/m) α P$

CHXII05:SURFACE CHEMISTRY

320812 The gas that is adsorbed to a larger extent on charcoal is

1

H_{2}

2

{CO}_{2}

3

CO

4

{NH}_{3}

CHXII05:SURFACE CHEMISTRY

320809 Which gas will be adsorbed on a solid to greater extent?

1 A gas having non polar molecule

2 A gas having the highest critical temperature

(T_{c})

3 A gas having the lowest critical temperature

4 A gas having the highest critical pressure

CHXII05:SURFACE CHEMISTRY

320810 In an adsorption experiment, a graph between $\log (x / m)$ versus $\log P$ was found to be linear with a slope of $45^{\circ}$ . The intercept on the $y$ axis was found to be 0.301 . Calculate the amount of the gas adsorbed per gram of charcoal under a pressure of 3.0 atm .

1 6

2 4

3 1

4 8

Explanation:

$\log \frac{x}{m} = \log K + \frac{1}{n} \log P$
$∴$ Plot of $\log \frac{x}{m}$ versus $\log P$ is linear with slope $= \frac{1}{n}$ and intercept $= \log K$
Thus $\frac{1}{n} = \tan θ = \tan 45^{\circ} = 1$ or $n = 1$
$\log K = 0.301$ or $K = antilog 0.301 = 2$
At $P = 3$ atm
$\frac{x}{m} = K P^{1 / n} = 2 \times (3)^{1} = 6$

CHXII05:SURFACE CHEMISTRY

320811 In Langmuir's model of adsorption of a gas on a solid surface

1 The mass of gas striking a given area of surface is proportional to the pressure of the gas

2 The adsorption at a single site on the surface may involve multiple molecules at the same time

3 The rate of dissociation of adsorbed molecules from the surface does not depend on the surface covered

4 The mass of gas striking a given area of surface is independent of the pressure of the gas

Explanation:

According to Langmuir adsorption isotherm, $(x/m) α P$

CHXII05:SURFACE CHEMISTRY

320812 The gas that is adsorbed to a larger extent on charcoal is

1

H_{2}

2

{CO}_{2}

3

CO

4

{NH}_{3}