QJEEM13Chf24c: JEE Main 2013 Chemistry - Class 11 JEEM13Chf24c Solution: The molarity of a solution obtained by mixing 750 mL of 0.5 (M) …

Question

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The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be:

Accepted Answer

The formula for molarity of mixture of two substance is =

{{{M_1}{V_1} + {M_2}{V_2}} \over {{V_1} + {V_2}}}

Here

{M_1} = 0.5

,

{V_1} = 750

,

{M_2} = 2

,

{V_2} = 250

\therefore

Molarity of mixture =

{{0.5 \times 750 + 2 \times 250} \over {750 + 250}}

=

{{375 + 500} \over {1000}}

=

{{875} \over {1000}}

= 0.875

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