Answer to Question #170411 in General Chemistry for Surendra

Question

What is the S?- concentration of a 103M HCI solution which is saturated with H2S ? H,S(aq) + 2H,O Ka = 1.1 x 10-21 2H;0* (aq) + S² (aq). Please give m answered solution. Fast

Answer 1

HCl $\to$ H⁺ + Cl^-

______1.03M ____

H₂S $\to$ 2H⁺ + S^2-

______1.03___x

[H⁺]² [S^2-] = Ka

[1.03]² [x] = 1.1×10^-21

x = 1.1×10^-21 /(1.03×1.03)

x = 1.03×10^-21