(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-]。
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-]。
举一反三
- (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-]。
- 6 . 在下述各组相应的酸碱组分中,组成共轭酸碱关系的是 A.H 2 A S O 4 - - A S O 4 3- B. H 2 CO 3 - CO 3 2- C. NH 4 + - NH 3 D. H 2 PO 4 - - PO 4 3-
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- 下列有关Na2HPO4在水溶液中质子条件的叙述,哪个是正确的?( ) A: [H2PO4-] + [H3PO4] + [H+] =3 [PO43-]+ [OH-] B: 2[H2PO4-] + 3[H3PO4] + [H+] = [PO43-]+ [OH-] C: 3[H2PO4-] + 2[H3PO4] + [H+] = [PO43-]+ [OH-] D: [H2PO4-] + 2[H3PO4] + [H+] = [PO43-]+ [OH-]
- 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-]