89 Решение задачки по химии №08 975

Express the equilibrium constant of the system in terms of the concentrations of substances:
2NH3 (gas) H2S (gas) ⇔ (NH4)2S (solid) (ΔH < 0)
Indicate where the equilibrium will shift if:
a) increase the temperature
b) reduce pressure;
c) increase the concentration of NH3?

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