Which compound has a really massive worth of Ka in aqueous answer

chances are youll arrange an ICE chart (I = preliminary, C = substitute, E = equilibrium) for a weak acid. HB = cinnamic acid on the perfect of the chart, you might need HB > H B- The preliminary quantity of HB is a million.6*10^-3 The substitute for HB is -x, while the substitute for H and B- is x The equilibrium quantity for HB is a million.6*10^-3 x The equilibrium quantity for H is x. Ka = [H ]^2/[HB] So Ka = x^2/(a million.6*10^-3 x) utilizing reality x is unquestionably a kind of small intensive kind, that is faraway from the denominator with out inflicting a lot disturbance. so which you are left with Ka = x^2/a million.6*10^-3 After plugging in Ka and fixing for x, you get: x = 2.40 3*10^-4 = [H ] -log ([H ]) = pH pH = 3.sixty one

chances are youll arrange an ICE chart (I = preliminary, C = substitute, E = equilibrium) for a weak acid. HB = cinnamic acid on the perfect of the chart, you might need HB > H B- The preliminary quantity of HB is a million.6*10^-3 The substitute for HB is -x, while the substitute for H and B- is x The equilibrium quantity for HB is a million.6*10^-3 x The equilibrium quantity for H is x. Ka = [H ]^2/[HB] So Ka = x^2/(a million.6*10^-3 x) utilizing reality x is unquestionably a kind of small intensive kind, that is faraway from the denominator with out inflicting a lot disturbance. so which you are left with Ka = x^2/a million.6*10^-3 After plugging in Ka and fixing for x, you get: x = 2.40 3*10^-4 = [H ] -log ([H ]) = pH pH = 3.sixty one

The preliminary reply is flawed. The right alternative is B, HNO3.

This post is last updated on hrtanswers.com at Date : 1st of September – 2022