Formation of a solution from two components can be considered as … - Vidyadip

MCQ

Formation of a solution from two components can be considered as

$(i)$ Pure solvent $\to$ separated solvent molecules $\Delta$ $H_1$

$(ii)$ Pure solute $\to$ separated solute molecules$\Delta$ $H_2$

$(iii)$ Separated solvent and solute molecules $\to$ solution $\Delta H_3$ Solution so formed will be ideal if

A
$\Delta {H_{{\rm{soln}}}} = \Delta {H_3} - \Delta {H_1} - \Delta {H_2}$
✓
$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} + \Delta {H_2} + \Delta {H_3}$
C
$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} + \Delta {H_2} - \Delta {H_3}$
D
$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} - \Delta {H_2} - \Delta {H_3}$

✓

Answer

Correct option: B.

$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} + \Delta {H_2} + \Delta {H_3}$

b
Solution so formed will be ideal if $\Delta H _{\text {soln. }}=\Delta H _1+\Delta H _2+\Delta H _3$

Adding $(i)$ to $(iii)$

pure solute + pure solvent $\rightarrow$ solution;

$\Delta H =\Delta H _1+\Delta H _2+\Delta H _3$

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

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

How many electrons can be accommodated in a sub-shell for which $n = 3,\,l = 1$

Which will make basic buffer?

Assertion : The equilibrium constant is fixed and a characteristic for any given chemical reaction at a specified temperature.
Reason : The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.

$H-C\equiv C-H\xrightarrow[{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}(A)\xrightarrow[(2)\,{{H}_{3}}{{O}^{\oplus }}]{(1)\,N{{H}_{3}}+HCN}(B);$ Product $(B)$ of given reaction is

The compound($s$) with $TWO$ lone pairs of electrons on the central atom is(are)

($A$) $\mathrm{BrF}_5$ ($B$) $\mathrm{ClF}_3$ ($C$) $\mathrm{XeF}_4$ ($D$) $\mathrm{SF}_4$

In which of the following metallic bond is strongest

Product $(A)$ obtained is

Before equilibrium is set-up for the chemical reaction ${N_2}{O_4}(g) \rightleftharpoons 2N{O_2}(g)$ , vapour density $d$ of the gaseous mixture was measured. If $D$ is the theoretical value of vapour density, variation of $\alpha $ with $D/d$ is given by the graph. What is value $D/d$ at point $A$ ?

Pure water does not conduct electricity because it

If $1\frac{1}{2}$ moles of oxygen combine with $ Al$ to form $A{l_2}{O_3}$ the weight of $Al$ used in the reaction is ............. $\mathrm{g}$ $(Al=27)$