Before titration, resultant molarity of $H C l$ of the student A after addition of $H_{2} O$ is :

same as that of B

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double as that of B

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half as that of B

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one third as that of B

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Solution

The correct option is B double as that of B
Total volume in solution $A$ is $40 m L$ and total volume in solution B is $80 m L$ .
The number of moles of $H C l$ is same in $A$ and $B$ .
Hence, the molarity of the solution $A$ is one half of the molarity of solution $B$ .

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Before titration, resultant molarity of HCl of the student A after addition of H2O is :

The correct option is B double as that of BTotal volume in solution A is 40mL and total volume in solution B is 80mL.The number of moles of HCl is same in A and B.Hence, the molarity of the solution A is one half of the molarity of solution B.

Before titration, resultant molarity of $H C l$ of the student A after addition of $H_{2} O$ is :

The correct option is B double as that of B
Total volume in solution $A$ is $40 m L$ and total volume in solution B is $80 m L$ .
The number of moles of $H C l$ is same in $A$ and $B$ .
Hence, the molarity of the solution $A$ is one half of the molarity of solution $B$ .