Elements of group 16 form hydrides with the generic formula H2X. When gaseous H2X is bubbled through a solution containing 0.30 M hydrochloric acid, the solution becomes saturated and [H2X] = 0.10 M.The following equilibria exist in this solution:H2X(aq)+H2O(l)HX−(aq)+H3O+(aq) K1 = 8.3 ×× 10–8HX−(aq)+H2O(l)X2−(aq)+H3O+(aq) K2 = 1.0 ×× 10–14Calculate the concentration of X2– in the solution.

Given reactionsH2X(aq)+H2O(l) →HX-(aq)+H3O+ ,K1 = 8.3 ×× 10-8HX-(aq)+H2O(l) →X2-(aq)+H3O+(aq) ,K2…

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Elements of group 16 form hydrides with the generic formula H₂X. When gaseous H₂X is bubbled through a solution containing 0.30 M hydrochloric acid, the solution becomes saturated and [H₂X] = 0.10 M.

The following equilibria exist in this solution:
H2X(aq)+H2O(l)HX−(aq)+H3O+(aq) K₁ = 8.3 ×× 10^–8

HX−(aq)+H2O(l)X2−(aq)+H3O+(aq) K₂ = 1.0 ×× 10^–14

Calculate the concentration of X^2– in the solution.

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