12. Which of the following compounds would have the largest melting point? (A) NaCl (B) KCl (C) MgO (D) MgCl2

12. Which of the following compounds would have the largest melting point?
(A) NaCl
(B) KCl
(C) MgO
(D) MgCl₂

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統計： A(0), B(0), C(1), D(0), E(0) #3232884

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4. For two monoprotic acids (HA, HB) and their conjugate bases (A- , B- ), the following relations are known: HA + B- A- + HB, K ＞ 1 and pKb(A- ) ＜ 7.0. Which of the following order of K’s is correct? (A) Kb(B- ) ＞ Ka(HB) ＞ Ka(HA) ＞ Kb(A- ) (B) Kb(A- ) ＞ Kb(B- ) ＞ Ka(HA) ＞ Ka(HB) (C) Kb(B- ) ＞ Kb(A- ) ＞ Ka(HA) ＞ Ka(HB) (D) Kb(B- ) ＞ Ka(HA) ＞ Kb(A- ) ＞ Ka(HB)

12. Which of the following compounds would have the largest melting point?
(A) NaCl
(B) KCl
(C) MgO
(D) MgCl₂

詳解 (共 1 筆)

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