Question

Calculate volume of water which could be added to 20 ml.of 0.65 molar hcl.to dilute the solution to 0.2 molar

Answer 1

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Answer 2

Answer:

The volume of water added for dilution in the solution measured is $45ml$.

Explanation:

Given,

The initial molarity of the $HCl$ solution, M₁ = $0.65 M$

The molarity of the solution after dilution, M₂ = $0.2M$

The initial volume of the solution, V₁ = $20ml$

The volume of water added for dilution in the solution =?

As we know,

• The relationship between molarity and volume is given by the equation:
• $M_{1}V_{1}= M_{2}V_{2}$

Here,

• M₁ = The solution's initial molarity
• M₂ = The solution's molarity after dilution
• V₁ = The solution's initial volume
• V₂ = The solution's final volume

After putting the given values in the equation, we get:

• $0.65\times 20= 0.2\times V_{2}$
• V₂ = $65 ml$

Hence, the volume of water added in the solution = $V_{2} -V_{1}$ = $65 -20$ = $45ml$.