Problem: Silane (SiH4) has not been observed in the atmosphere of Saturn. The absence of silane is believed to be due to the reactionSiH4(g) + Mg(OH)2(g) + H2O(g) ⇌ MgSiO3(s) + 4H2(g)As the temperature is raised, the partial pressure of H2 increases. What does this tell you about the reaction?a) The number of moles of gas increases on going from reactant to productsb) The reaction is endothermicc) The reaction is exothermicd) The reaction is heterogeneous (involving more than one phase)e) Mg(OH)2 does not obey the ideal gas law

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Silane (SiH4) has not been observed in the atmosphere of Saturn. The absence of silane is believed to be due to the reaction

SiH4(g) + Mg(OH)2(g) + H2O(g) ⇌ MgSiO3(s) + 4H2(g)

As the temperature is raised, the partial pressure of H2 increases. What does this tell you about the reaction?

a) The number of moles of gas increases on going from reactant to products

b) The reaction is endothermic

c) The reaction is exothermic

d) The reaction is heterogeneous (involving more than one phase)

e) Mg(OH)2 does not obey the ideal gas law

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