First slide

Concentration methods

Question

0.3 litres each of 1 M HCl and 2 M H₂SO₄ are mixed with each other. The solution is diluted to one litre. Proton concentration of the resultant mixture is ----- M

Moderate

A

1.5
B

1.25
C

0.45
D

2.5

Solution

$N = \frac{V_{1} N_{2} + V_{2} N_{2}}{Total volume of the mixture}; N = \frac{0.3 (1) 1 + 0.3 (2) 2}{1}; N = 1.5 N; N_{acid} = {[H]}^{+}$

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