Two solution labelled as 3 , M , HCl and 1M , HCl are mixed in th… - Vidyadip

MCQ

Two solution labelled as $3\, M\, HCl$ and $1M\, HCl$ are mixed in the ratio of $x : y$ by volume and the molarity of resulting solution is $1.5\, M.$ What is the molarity of the resulting solution if they are mixed in the ratio $y : x$ by volume ? ............ $\mathrm{M}$

A
$4$
B
$3$
C
$2$
✓
$2.5$

✓

Answer

Correct option: D.

$2.5$

d
Case $-I$ $\left(\mathrm{v}_{1}: \mathrm{v}_{2}=\mathrm{x}: \mathrm{y}\right)$

$\mathrm{M}_{\mathrm{res}}=1.5=\frac{3 \times(\mathrm{x})+1 \times(\mathrm{y})}{\mathrm{x}+\mathrm{y}}$

$1.5 x+1.5 y=3 x+y$

$0.5 y=1.5 x ; y=3 x$

Case $-II$ $\left(\mathrm{v}_{1}: \mathrm{v}_{2}=\mathrm{y}: \mathrm{x}\right)$

$M_{\mathrm{res}}=\frac{3 \times(\mathrm{y})+1 \times(\mathrm{x})}{\mathrm{v}+\mathrm{x}}=\frac{3 \times(3 \mathrm{x})+\mathrm{x}}{3 \mathrm{x}+\mathrm{x}}=2.5$

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 "M.C.Q (1 Marks)" from 1. Some basic concept of chemistry→1. Some basic concept of chemistry — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Arrange the Carbocations in decreasing order of stability

A mixture of gas expands form $0.03\, m^3$ to $0.06\, m^3$ at a constant pressure of $1\,M\, Pa$ and absorbs $84\, kJ$ of heat during the process. The change in internal energy of the mixture is.....$kJ$

Bond angles $104^o, 117^o$ and $180^o$ are associated with

Which one of the following reagents is used for detection of unsaturation in alkenes

$XeF_2$ is isostructural with

What is the oxidation number of sulphur in $N{a_2}{S_4}{O_6}$

Select the correct order of bond angle ?

Correct order of rate of $EAS$ (electrophilic aromatic substitution) is

The predominant product formed, when $3-$ methyl-$2$ -pentene reacts with $HOCl$, is

In the electronic structure of acetic acid, there are