Determine the conjugate acid/base pair in each reaction 1) HS- + OH- --> 2) H2PO4- (acid) / (CB)...

Question

Question

Determine the conjugate acid/base pair in each reaction

1) HS^- + OH^- -->

2) H₂PO₄^- (acid) / (CB)

3) HS^- (Base) / (acid)

Answer 1

Answer #1

1. H2O + HS^- <-> OH ^- + H₂S

H2O acid ( donates H⁺)
HS^- base (accepts H⁺)
For reverse reaction
OH^- conjugate base (accepts H⁺)
H2S cojugate acid (donates H⁺)

2. HPO₄^2- is the conjugate base of H₂PO₄^-. The conjugate base of an acid, even a polyprotic one, always has one less H than the acid.

3.HS- is conjugate base and H2S is conjugate acid

Answer 2

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