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Which choice correctly describes this reaction? H3PO4(aq) + NH3(aq) →H2PO4(aq)+NH4(aq) a. impossible; reaction equation is not balanced b. equal reactants and products at equilibrium c. strongly reactant-favoured at equilibrium d. strongly product-favoured at equilibrium e. 100% reactant-favoured (no reaction) #2. Which choice correctly describes this phase change at 298 K? H2O(l) → H2O(s) a. ∆G°sys < 0, non-spontaneous at this temperature b. ∆G°sys > 0, non-spontaneous at this temperature c. ∆G°sys < 0, spontaneous at this temperature d. ∆G°sys > 0, spontaneous at this temperature e. ∆G°sys = 0, at standard-state equilibrium #3. Which choice correctly describes this phase change (not same as #2)? H2O(g) → H2O(l) a. ∆H°sys = 0, so disorder of surroundings unaffected b. ∆H°sys < 0, so disorder of surroundings decreases c. ∆H°sys > 0, so disorder of surroundings decreases d. ∆H°sys < 0, so disorder of surroundings increases e. ∆H°sys > 0, so disorder of surroundings increases
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