Question

)Find out the resultant molarity if following solutions are mixed: 30 ml of 0.05M H2SO4 and 30 ml of 0.2M HCl (Ans: 0.15 moles/L)

Answer 1

Answer:

0.15 mol/L

Explanation:

Molarity of Solution 1 (M1) = 0.05 M

Volume of Solution 1 (V1) = 30mL = 0.03 L

Molarity of Solution 2 (M2) = 0.2 M

Volume of Solution 2 (V2) = 30 mL = 0.03 L

We have the formula to find the Molarity of the Mixture as follows.

$\\ \ \frac{(m1v1) + (m2v2)} {v1 + v2 }$

$\ \frac{(0.05)(0.03) + (0.2)(0.03)}{(0.03) + (0.03)}$

Thus on solving this we get,

Final Molarity = 0.0075/0.06

==> 0.15 Molar

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# Even though you solve it taking volume in mL , then also no problem at all.

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