Henry's Law

Q.

The effect of temperature on the solubility of a gas in a liquid is governed by ________.

Q.

The vapor pressure of water at room temperature is lowered by $5\%$ by dissolving a solute in it. What is the approximate molality of the solution?

1. $2$

2. $1$

3. $4$

4. $3$

Q.

Which of the following is not correct about Henry’s law?

1. On increasing temperature value of ${\mathrm{K}}_{\mathrm{H}}$ increases

2. Value of ${\mathrm{K}}_{\mathrm{H}}$ increases solubility of gas increases

3. The value of ${\mathrm{K}}_{\mathrm{H}}$ for two different gases at the same temperature is not the same

4. None of these

Q. $Fe{SO}_4$ is used in brown ring test for nitrates and nitrites In this test, a freshly prepared $Fe{SO}_4$ solution solution is mixed with solution containing ${NO}_2^{-}$ and ${NO}_3^{-}$ and the conc, $H_2{SO}_4$ is run down the side of the test tube. If the mixture gets hot or is shaken,
$\left(I\right)$ the brown colour disappear $\left(II\right)$ $NO$ is evolved
$\left(III\right)$ a yellow solution of ${Fe}_2{\left({SO}_4\right)}_3$

1. $I,II,III$ correct
2. $I,III$ correct
3. $II,III$ correct
4. only $I$ correct

Q.

Why do mountaineers carry oxygen cylinders with them when they climb high mountains?

Q. $9.0g$ water is added into oleum sample labelled as $112\%H_{2}S{O}_4$, then the amount of free $S{O}_3$ remaining in the solution is:

1. $14.93L$ at STP
2. $7.46L$ at STP
3. $3.73L$ at STP
4. $11.2L$ at STP

Q. Which one of the following statement is incorrect?

1. $T{i}^{3+}$ salts are better oxidising agents
2. $G{a}^{+}$ salts are better reducing agents
3. $P{b}^{4+}$ salts are better oxidising agents
4. $A{s}^{5+}$ salts are better oxidising agents

Q. One liter of CO2 react with coke to form a gaseous mixture of 1.4L. Then find the volume of CO2 and CO in the fixed mixture??