The Ka of phosphoric acid, H3PO4, is 7.6 × 10–3 at 25 °C. For the reaction H3PO4(aq) ⇌ H2PO4–(aq) + — Equilibrium Chemistry Question
Question
The Ka of phosphoric acid, H3PO4, is 7.6 × 10–3 at 25 °C. For the reaction
H3PO4(aq) ⇌ H2PO4–(aq) + H+(aq)
∆H° = –14.2 kJ/mol. What is the Ka of H3PO4 at 60 °C?
A.✓ Correct
4.2 × 10–3
B.
6.8 × 10–3
C.
8.5 × 10–3
D.
1.8 × 10–2
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