First slide

Concentration methods

Question

100 mL each of 0.1 M KOH and 0.4 M NaOH are mixed with each other. The solution is diluted to half litre. Molarity of the resultant mixture is ----- M

Moderate

A

0.05
B

0.15
C

0.25
D

0.1

Solution

$M = \frac{V_{1} M_{2} + V_{2} M_{2}}{Total volume of the mixture}; M = \frac{100 (0.1) + 100 (0.4)}{500}; M = 0.1 M;$

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