NH4H2PO4水溶液PBE是：
A: [H+] + [NH4+] = [OH-] + [HPO42-] + 2[PO43-]
B: [H+] + [H3PO4] = [OH-] + [H2PO4-] + [HPO42-] + [NH3]
C: [H+] + [H3PO4] = [OH-] + [HPO42-] + [PO43-] + [NH3]
D: [H+] + [H3PO4] = [OH-] + [NH3] + [HPO42-] + 2[PO43-]
A: [H+] + [NH4+] = [OH-] + [HPO42-] + 2[PO43-]
B: [H+] + [H3PO4] = [OH-] + [H2PO4-] + [HPO42-] + [NH3]
C: [H+] + [H3PO4] = [OH-] + [HPO42-] + [PO43-] + [NH3]
D: [H+] + [H3PO4] = [OH-] + [NH3] + [HPO42-] + 2[PO43-]
举一反三
- (NH4)2HPO4水溶液的质子条件式（PBE）为（ ）。 A: [H+]+[H2PO4-]+[H3PO4] =[OH-]+[NH3] +[PO43-]； B: [H+]+[H2PO4-]+2[H3PO4] =[OH-]+[NH4+] +[PO43-]； C: [H+]+[H2PO4-]+2[H3PO4] =[OH-]+[NH3] +[PO43-]； D: [H+]+[H2PO4-]+[H3PO4] =[OH-]+[NH3] +[HPO42-]。
- 768.下列酸碱,互为共轭酸碱对的是( )。 A: H₃PO₄与PO₄³- B: HPO₄³-与PO₄³- C: HPO₄²-与H₂PO₄- D: NH₄+与NH₃
- (NH4)2HPO4水溶液的质子条件式（PBE）正确的是（ ）。 A: [H+]+[H2PO4-]+[H3PO4] = [OH-]+[NH3] +[PO43-]； B: [H+]+[H2PO4-]+2[H3PO4] = [OH-]+[NH4+]+[PO43-]； C: [H+]+[H2PO4-]+2[H3PO4] = [OH-]+[NH3] +[PO43-]； D: [H+]+[H2PO4-]+[H3PO4] = [OH-]+[NH3] +2[HPO42-]。
- NaOH标准溶液滴定H3PO4至甲基橙终点时的质子条件式是 A: [H+]+[H3PO4]=[OH-]+[HPO42-]+[PO43-] B: [H+]+[H3PO4]=[OH-]+[HPO42-]+2[PO43-] C: [H+]+2[H3PO4]+[H2PO4-]=[OH-]+[PO43-] D: [H+]+[Na+]=[OH-]+[H2PO4-]+2[HPO42-]+3[PO43-]
- Na2HPO4 水 溶 液 的 质 子 条 件 式 是 ： A: [ H+]+2[ H2PO4-]+3[H3PO4]=[PO43-]+[OH-] B: [ H+]+[ H2PO4-]+2[H3PO4]=[PO43-]+[OH-] C: [ H+]+[HPO42-]+2[H2PO4-]=2[ PO43-]+[ OH-] D: [ OH-]+3[ PO43-]= [ H+]+[HPO42-]+2[H2PO4-]