KVPY2012ChemistryIonic Equilibrium
Upon mixing equal volumes of aqueous solutions of 0.1 M HCl and 0.2 M H ₂ SO ₄ , the concentration of H ⁺ in the resulting solution is -
Options
- A0.30 ~mol / L
- B0.25 ~mol / L
- C0.15 ~mol / L
- D0.10 ~mol / L
Correct answer
B. 0.25 ~mol / L
Step-by-step solution
0.1 MHCl , V volume H ⁺ moles =0.1 ~V 0.2 MH ₂ SO ₄, ~V volume H ⁺ moles =0.2 2 V =0.4 ~V Total moles of H ⁺=0.4 ~V +0.1 ~V =0.5 ~V [ H ⁺ ]= Moles Vol. = 0.5 ~V 2 ~V =0.25 M / I