The volume of $10\,N$ and $4\,N\, HCl$ required to make $1$ litre of $7\,N \,HCl$ are
- $0.75$ litre of $10\,N \,HCl$ and $0.25 $ litre of $4\,N \,HCl$
- $0.80$ litre of $10\,N\, HCl$ and $0.20$ litre of $4\,N \,HCl$
- $0.60$ litre of $10\,N \,HCl$ and $0.40$ litre of $4\,N \,HCl$
- $0.50$ litre of $10\,N \,HCl$ and $0.50$ litre of $4\,N \,HCl$
The Correct Option is D
Solution and Explanation
$N\, HCl$ to give $(V+1-V)=1 L$ of $7 N HCl$
$N_{1} V_{1}+N_{2} V_{2} =NV $
$10 V+4(1-V) =7 \times 1 $
$10 V+4-4 V =7 $
$6 V =7-4 $
$V =\frac{3}{6}=0.50\, L$
Volume of $ 10 \,N \,HCI =0.50 L $
Volume of $4 N HCl =1-0.50 =0.50 \,L$
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Concepts Used:
Solutions
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
Types of Solutions:
The solutions can be classified into three types:
- Solid Solutions - In these solutions, the solvent is in a Solid-state.
- Liquid Solutions- In these solutions, the solvent is in a Liquid state.
- Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:
- Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
- Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
- Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.