17. The osmotic pressure of a 0.010 M aqueous solution of potassium sulfate was measured to be 0.660 atm at 25 ℃. What is the van't Hoff factor (i) for this solution? (gas constant R = 0.082 atm L/mol-K) (A) 0.37 (B) 0.90 (C) 0.98 (D) 2.70 (E) 2.95

17. The osmotic pressure of a 0.010 M aqueous solution of potassium sulfate was measured to be 0.660 atm at 25 ℃. What is the van't Hoff factor (i) for this solution? (gas constant R = 0.082 atm L/mol-K)
(A) 0.37
(B) 0.90
(C) 0.98
(D) 2.70
(E) 2.95

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統計： A(1), B(0), C(0), D(9), E(0) #3239565

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B1 · 2024/09/22

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7. Which of the following statements is incorrect? (A) 2 NO(g) + 2 CO(g) → N2(g) + 2 COz(g) is spontaneous at room temperature, then the reaction has △H >0. (B) The reaction NH3(g) + HCI(g)→ NH4CI(s) can proceed spontaneously at room temperature, so the AH of the reaction is < 0. (C) For the reaction MgCl2(1)→ Mg(I) + Cl2(g) to proceed at a certain temperature, it has △H > 0 and △S > 0. (D) The reaction C(s) + CO2(g)→2CO(g) cannot proceed spontaneously at room temperature, then the reaction has △H > 0. (E) After the coating of copper-plated iron products is broken, the iron products are more likely to corrode than before the damage.

17. The osmotic pressure of a 0.010 M aqueous solution of potassium sulfate was measured to be 0.660 atm at 25 ℃. What is the van't Hoff factor (i) for this solution? (gas constant R = 0.082 atm L/mol-K)
(A) 0.37
(B) 0.90
(C) 0.98
(D) 2.70
(E) 2.95

詳解 (共 1 筆)

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