The amount of benzoic acid (C₆H₅COOH) required for preparing 250 mL of 0.15 M solution in methanol is:

1.	4.57 g	2.	3.57 g
3.	1.57 g	4.	12.57 g

Henry’s law constant for the solution of methane in benzene at 298 K is 4.27 × 10⁵ mm Hg. The mole fraction of methane in benzene at 298 K under 760 mm Hg will be:

1. 1.85 × 10^–5

2. 192 × 10^–4

3. 178 × 10^–5

4. 18.7 × 10^–5

The solubility of \(H_2S\) in water at STP is 0.195 m. The value of Henry's constant is:

The solubility of gases in liquids generally decreases as temperature increases.
The primary reason for this behavior is:

To minimize the painful effects accompanying deep sea diving, oxygen diluted with less soluble helium gas is used as breathing gas by the divers. This is an example of the application of:

A solution of glucose (M.W. = 180 g mol^–1) in water is 10 % w/w. The mole fraction of each component in the solution is:

The type of molecular interactions in a solution of alcohol and water is:

The graph representing Henry's law is given below:

The value of the slope will be:

Which graph represents the positive deviation of vapor pressure?

1.		2.
3.		4.	None of the above