First slide

Concentration methods

Question

0.5 litres of 1 M HCl and 0.3 litres of 1 M H₂SO₄ are mixed with each other. The solution is diluted to two litres. Proton concentration of the resultant mixture is ----- M

Moderate

A

0.55
B

0.4
C

0.5
D

1.1

Solution

$N = \frac{V_{1} N_{2} + V_{2} N_{2}}{Total volume of the mixture}; N = \frac{0.5 (1) 1 + 0.3 (1) 2}{2}; N = 0.55 N; N_{acid} = {[H]}^{+}$

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