When 100 mL of 0. 1 M KNO3 and 400 mL of 0.2 M HCI and 500 mL of 0.3 M H2SO4 are mixed, then in the resulting solution

KNO3          +          HCl      +      H2SO4100×0.1=10mmol400×0.2=80mmol500×0.3=150mmol Total volume = 100+400+500=1000 mLMK⊕=101000=0.01MMSO4−2=1501000=0.15MMH⊕=80+2×1501000=0.38MMNO3⊖=101000=0.01MMCl⊖=801000=0.08M