Answer the following questions:
(a)[2.0]
An aqueous solution is made by dissolving $10\text{ g}$ of glucose ($\text{C}_6\text{H}_{12}\text{O}_6$) in $90\text{ g}$ of water at $300\text{ K}$. If the vapour pressure of pure water at $300\text{ K}$ is $32\cdot8\text{ mm Hg}$, what would be the vapour pressure of the solution?
(Given: $\text{C} = 12, \text{H} = 1$ and $\text{O} = 16$)
(b)[2.0]
A solution containing $12\cdot5\text{ g}$ of a non-electrolyte solute in $175\text{ g}$ of water gave boiling point of $100\cdot70^\circ\text{C}$. Calculate the molecular mass of the solute.
(Given: $K_b$ for water $= 0\cdot52\text{ K kg mol}^{-1}$)
(c)[1.0]
Why are soda water bottles sealed under high pressure?
No answer yet.