When HSO4- + H2O gt; H3)^+ + SO4 2- is added to Na2SO4, I know it shifts to the left = less H+.

When HSO4- + H2O > H3)^+ + SO4 2- is added to Na2SO4, I know it shifts to the left = less H+.. Also when NaHSO4 is added to the above equation, it will shift to the right to replace the removed component and become more acidic.. The question, how do I determine if this reaction is endothermic or exothermic?

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