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  • 5 ml of 1 M HCl, 20 ml of 0.5 M H2SO4, 75 ml of 0.1 M HNO3 are mixed together. What is the molarity of H+ ions in the resulting solution?<div class='

5 ml of 1 M HCl, 20 ml of 0.5 M H2SO4, 75 ml of 0.1 M HNO3 are mixed together. What is the molarity of H+ ions in the resulting solution?

Option: 1

0.325 M


Option: 2

0.5 M


Option: 3

0.725 M


Option: 4

1 M


Answers (1)

best_answer

mmoles of HCl = 5 \times 1 = 5

mmoles of H2SO4 = 20 \times 0.5 = 10

mmoles of  HNO3 = 75 \times 0.1 = 7.5

Now, HCl and HNO3 are monoprotic acid while H2SO4 is a diprotic acid

\therefore mmoles of H+ = 5 + 2 \times 10 + 7.5 = 32.5

\therefore \mathrm{\:Molarity\: of\: H^{+} \:ions= \frac{32.5}{100} = 0.325\:M}

Posted by

Sanket Gandhi

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