Equal volumes of three strong acid solutions of p H 3 , 4 and 5 are mixed in a vessel. What will be the H + ion concentration in the mixture?

Step-by-step solution

H + = 10 – 3 M , H + = 10 – 4 M , H + = 10 – 5 M for the given acids. M m i x V m ix = M 1 V 1 + M 2 V 2 + M 3 V 3 M m i x × 3 = 10 – 3 × 1 + 10 – 4 × 1 + 10 – 5 × 1 M m i x = 1 0 - 5 100 + 10 + 1 3 = 111 × 1 0 - 5 3 = 37 × 10 – 5 M = 3.7 × 10 – 4 M