(A) The normality equation is $N_1 V_1 + N_2 V_2 = N_3 (V_1 + V_2)$.Let the volume of solution $A$ be $x \ L$.Then the volume of solution $B$ will be

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

(A) The normality equation is $N_1 V_1 + N_2 V_2 = N_3 (V_1 + V_2)$.Let the volume of solution $A$ be $x \ L$.Then the volume of solution $B$ will be $(2 - x) \ L$.Applying the normality equation:$0.5 x + 0.1 (2 - x) = 0.2 \times 2$$0.5 x + 0.2 - 0.1 x = 0.4$$0.4 x = 0.2$$x = 0.5 \ L$So,the volume of solution $A$ is $0.5 \ L$.The volume of solution $B$ is $2 - 0.5 = 1.5 \ L$.Therefore,the correct option is $A$.

Class 11 Chemistry Some Basic Concepts of Chemistry Mix Examples of Some Basic Concept of Chemistry

Medium

Hydrochloric acid solutions $A$ and $B$ have concentrations of $0.5 \ N$ and $0.1 \ N$ respectively. The volumes of solutions $A$ and $B$ required to make $2 \ L$ of $0.2 \ N$ $HCl$ are:

A
$0.5 \ L$ of $A + 1.5 \ L$ of $B$
B
$1.5 \ L$ of $A + 0.5 \ L$ of $B$
C
$1.0 \ L$ of $A + 1.0 \ L$ of $B$
D
$0.75 \ L$ of $A + 1.25 \ L$ of $B$

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Some Basic Concepts of Chemistry

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Mix Examples of Some Basic Concept of Chemistry

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If $10^{23}$ molecules are removed from $5.6 \ L$ of an ideal gas at $273 \ K$ and $2 \ atm$ pressure,how many moles of the gas will remain?

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In a $20\%$ aqueous solution of $H_2O_2$,the mole fraction of water is $.......$.

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In potash alum, the ratio of $K^+$ and $SO_4^{2-}$ ions is

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Hydrochloric acid solutions $A$ and $B$ have concentrations of $0.5 \ N$ and $0.1 \ N$ respectively. The volumes of solutions $A$ and $B$ required to make $2 \ L$ of $0.2 \ N$ $HCl$ are:

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When metallic copper comes in contact with moisture,a green powdery/pasty coating can be seen over it. This is chemically known as

The more commonly used baking powder contains about $30\%$ $NaHCO_3$,$20\%$ $NaAl(SO_4)_2$,$10\%$ $Ca(H_2PO_4)_2$ and $40\%$ starch. Which of the following statements is/are correct?

If $10^{23}$ molecules are removed from $5.6 \ L$ of an ideal gas at $273 \ K$ and $2 \ atm$ pressure,how many moles of the gas will remain?

In a $20\%$ aqueous solution of $H_2O_2$,the mole fraction of water is $.......$.

In potash alum, the ratio of $K^+$ and $SO_4^{2-}$ ions is

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