55. ΔS is positive for the reaction ________. (A)2H2 (g) + O2 (g) → 2H2O (g) (B)2NO2 (g) → N2O4 (g) (C) CO2 (g) → CO2 (s)(D)BaF2 (s) → Ba2+ (aq) + 2F- (aq)

55. ΔS is positive for the reaction ________.
(A)2H2 (g) + O2 (g) → 2H2O (g)
(B)2NO2 (g) → N2O4 (g)
(C) CO2 (g) → CO2 (s)
(D)BaF2 (s) → Ba2+ (aq) + 2F- (aq)

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統計： A(1), B(1), C(1), D(1), E(0) #3180526

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64. A result of the common-ion effect is ________. (A)that some ions, such as Na+ (aq), frequently appear in solutions but do not participate in solubility equilibria (B)that common ions, such as Na+ (aq), don't affect equilibrium constants (C) that the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility (D)that ions such as K+ and Na+ are common ions, so that their values in equilibrium constant expressions are always 1.00

55. ΔS is positive for the reaction ________.
(A)2H2 (g) + O2 (g) → 2H2O (g)
(B)2NO2 (g) → N2O4 (g)
(C) CO2 (g) → CO2 (s)
(D)BaF2 (s) → Ba2+ (aq) + 2F- (aq)

詳解 (共 1 筆)

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