Answer to Question #112216 in General Chemistry for Mohammad

Question

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

Answer 1

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