2 H2(g) + S2(g) ---equilibrium reaction arrow --- 2 H2S(g) At a certain temperature, Kc = 1.30 ✕ 1010 for the reaction above.?

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2018-05-27 7:43 am

At a certain temperature, Kc = 1.30 ✕ 1010 for the reaction above. Calculate the equilibrium concentration of H2S if [H2] = 0.00500 M and [S2] = 0.00230 M at equilibrium in a container.

M H2S=?

更新1:

At a certain temperature, Kc = 1.30 ✕ 10^10 for the reaction above. Calculate the equilibrium concentration of H2S if [H2] = 0.00500 M and [S2] = 0.00230 M at equilibrium in a container. M H2S=?

回答 (1)

胡雪8°

2018-05-27 11:50 am

2 H₂(g) + S₂(g) ⇌ 2 H₂S(g) …… Kc = 1.30 × 10¹⁰

At equilibrium:
Kc = [H₂S]² / ([H₂]² [S₂])
1.30 × 10¹⁰ = [H₂S]² / (0.00500² × 0.00230)
[H₂S] = √{(1.30 × 10¹⁰) × 0.00500² × 0.00230} M = 27.3 M

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