(A) Let the volume of solution $A$ be $V_1$ and the volume of solution $B$ be $V_2$.Given $V_1 + V_2 = 2 \, L$,so $V_2 = (2 - V_1) \, L$.Using the mol

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$0.5 \, L$ of $A + 1.5 \, L$ of $B$

(A) Let the volume of solution $A$ be $V_1$ and the volume of solution $B$ be $V_2$.Given $V_1 + V_2 = 2 \, L$,so $V_2 = (2 - V_1) \, L$.Using the molarity equation $M_1 V_1 + M_2 V_2 = M_3 V_3$:$0.5 \times V_1 + 0.1 \times (2 - V_1) = 0.2 \times 2$$0.5 V_1 + 0.2 - 0.1 V_1 = 0.4$$0.4 V_1 = 0.2$$V_1 = \frac{0.2}{0.4} = 0.5 \, L$Therefore,$V_2 = 2 - 0.5 = 1.5 \, L$.Thus,$0.5 \, L$ of $A$ and $1.5 \, L$ of $B$ are required.

Class 12 Chemistry Solutions Method of expressing concentration of solution

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The volumes of two $HCl$ solutions $A$ $(0.5 \, M)$ and $B$ $(0.1 \, M)$ to be mixed for preparing $2 \, L$ of $0.2 \, M \, HCl$ are

A
$0.5 \, L$ of $A + 1.5 \, L$ of $B$
B
$1.5 \, L$ of $A + 0.5 \, L$ of $B$
C
$1 \, L$ of $A + 1 \, L$ of $B$
D
$0.75 \, L$ of $A + 1.25 \, L$ of $B$

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Method of expressing concentration of solution

The molality of an aqueous solution of glucose is $1.0 \ m$. The mole fraction of glucose is approximately ........

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$A$ sample of drinking water is severely contaminated with chloroform $(CHCl_3)$. $CHCl_3$ is considered carcinogenic in nature. The level of contamination was $15 \ ppm$ (by mass).
$(i)$ Express this in percent by mass.
$(ii)$ Determine the molality of chloroform in the water sample.

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$A$ mixture of alcohol and water contains $54 \%$ water by mass. What is the mole fraction of ethanol?

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What is the molar concentration of chloride ion in a solution made by adding $300 \ mL$ of $3.0 \ M$ $KCl$ solution to $200 \ mL$ of $4.0 \ M$ $BaCl_2$ solution? $........ \ M$

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When is the parts per million $(ppm)$ unit used?

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The volumes of two $HCl$ solutions $A$ $(0.5 \, M)$ and $B$ $(0.1 \, M)$ to be mixed for preparing $2 \, L$ of $0.2 \, M \, HCl$ are

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The molality of an aqueous solution of glucose is $1.0 \ m$. The mole fraction of glucose is approximately ........

$A$ sample of drinking water is severely contaminated with chloroform $(CHCl_3)$. $CHCl_3$ is considered carcinogenic in nature. The level of contamination was $15 \ ppm$ (by mass).$(i)$ Express this in percent by mass.$(ii)$ Determine the molality of chloroform in the water sample.

$A$ mixture of alcohol and water contains $54 \%$ water by mass. What is the mole fraction of ethanol?

What is the molar concentration of chloride ion in a solution made by adding $300 \ mL$ of $3.0 \ M$ $KCl$ solution to $200 \ mL$ of $4.0 \ M$ $BaCl_2$ solution? $........ \ M$

When is the parts per million $(ppm)$ unit used?

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$A$ sample of drinking water is severely contaminated with chloroform $(CHCl_3)$. $CHCl_3$ is considered carcinogenic in nature. The level of contamination was $15 \ ppm$ (by mass).
$(i)$ Express this in percent by mass.
$(ii)$ Determine the molality of chloroform in the water sample.