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Standard XII

Chemistry

Normality

When 30mL of ...

Question

When 30mL of 0.1 M standard solution of $H C l$ is added to 15mL of NaOH solution to reach the endpoint then molarity of $N a O H$ is:

0.1 M

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1 M

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0.3 M

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2 M

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0.2 M

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Solution

The correct option is E 0.2 M
When 30mL of 0.1 M standard solution of HCl is added to reach the end point then, molarity of NaOH is 0.2 M.
$M_{1} V_{1} = M_{2} V_{2} 30 \times 0.1 = M_{2} \times 15 M_{2} = 0.2 M$

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When 30mL of 0.1 M standard solution of HCl is added to 15mL of NaOH solution to reach the endpoint then molarity of NaOH is:

The correct option is E 0.2 MWhen 30mL of 0.1 M standard solution of HCl is added to reach the end point then, molarity of NaOH is 0.2 M. M1V1=M2V230×0.1=M2×15M2=0.2M

When 30mL of 0.1 M standard solution of $H C l$ is added to 15mL of NaOH solution to reach the endpoint then molarity of $N a O H$ is:

The correct option is E 0.2 M
When 30mL of 0.1 M standard solution of HCl is added to reach the end point then, molarity of NaOH is 0.2 M.
$M_{1} V_{1} = M_{2} V_{2} 30 \times 0.1 = M_{2} \times 15 M_{2} = 0.2 M$