In the reaction HSO4^-(aq) + H2O (l) <--->H3O^+(aq)+SO4^2-

A. Which way should the equilibrium shift when Na2SO4 is added? Howdo you support your answer?
B. Which way should the equilibrium shift when NaHSO4 is added? Howdo you support your answer?
C. Is this reaction endothermic or exothermic? How do youknow?

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Related questions

NaOH was dissolved in MgCl2, the color turned dark pink (fromwhite). Then HCl was added and the color changed back towhite.

Now I have question:

The reaction you observed was Mg(OH)2 (s) <=> Mg(aq) ^+ 2OH^- (aq).
Compare the colors you observed in the experiment and answer thesequestions:

A. Which way should the equilibrium shift when HCl is added? How doyour results support your answer?
B. Which way should the equilibrium shift when Na2EDTA is added?How do your results support your answer?
C. Is this reaction endothermic or exothermic? How do youknow?

I

HSO₄^- (aq) + H₂O (l)Ã³H₃O⁺(aq)+SO₄^2-.
Which way should the equilibrium shift when NaHSO₄isadded?
Which way should the equilibrium shiftwhenNa₂SO₄ is added

Mg(OH)₂ (s) Ã³ Mg²⁺ (aq) +2OH^-
Which way should the equilibrium shift when Na₂EDTAisadded?

Are these reactions endothermic or exothermic?
I dont understand how to solve these problems