Answer to Question #112959 in General Chemistry for Nicolas

Question

If a 7.5 mL solution of HNO3 has a concentration of 0.05 M, what is its pH? Also, how
many grams of HCl are in the solution?

Answer 1

HNO₃ is a strong acid and dissociates completely or 100% .

ie., HNO₃-------->H⁺ +NO₃^-

hence H⁺ ion concentration will be same as concentration of nitric acid

pH=-log[H⁺]=-log[5x10^-2]=2-log5=2-0.7=1.3