Relative lowering of vapour pressure. - Vidyadip

Question

Relative lowering of vapour pressure.

✓

Answer

Relative lowering of vapour pressure: If $P_0$ and $P$ are the respective vapour pressures of a pure liquid (solvent) and the solution containing a non-volatile solute then $P < P _0$. Hence, $P _0- P$ represents the lowering of the vapour pressure due to addition of a nonvolatile solute.
$\therefore$ Relative lowering of vapour pressure $=\frac{P_0-P}{P_0}=\frac{\Delta P}{P_0}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in one or two sentence." from Solutions→Solutions — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

How is PHBV polymer prepared?

Explain the magnetic properties of transition (or d-block) elements.

Why are most of the d-block elements called transition elements?

What is the action of acetic anhydride on salicyclic acid?

Give reasons: $H _2 S$ has a lower boiling point than $H _2 O$.

How is a melamine-formaldehyde polymer (melamine) prepared?

write the structure of the monomer used in natural rubber.

When $50\ gv of a nonvolatile solute is dissolved in a certain quantity of solvent, the elevation of boiling point is $2.0\ K.$ What will be the elevation of a boiling point when $30\ g$ of solute is dissolved in the same amount of the same solvent?

Define : (1) Electrolytic cell (2) Voltaic or galvanic cell.

The rate law for the reaction $2 H _{2( g )}+2 NO _{( g )} \rightarrow N _{2( g )}+2 H _2 O _{( g )}$ is given by rate $= k \left[ H _2\right][ NO ]^2$. The reaction occurs in the following steps :
(i) $H _2+2 NO \rightarrow N _2 O + H _2 O$
(ii) $N _2 O + H _2 \rightarrow N _2+ H _2 O$
What is the role of $N _2 O$ in the mechanism? Identify the slow step.