Answer to Question #100315 in General Chemistry for Timi

Question

If 0.50 moles of KOH is dissolved in 1.00 L of 0.50 M of HCl solution, calculate the resulting concentrations of H3o+and OH-.

Answer 1

KOH+ HCl=KCl+H2.

If 0.50mmoles of are dissolved then they neutralise only 0.50 moles of HCl. Hence 0.50moles of H3O+ and 0H- are produced. The concentration is then given by;

$Moles =0.50/1+1$

$C=0.25/1000ml$

C=0.00025M