Na2HPO4水溶液的质子条件式为
A: [H+]+[H2PO4-]+2´[H3PO4]=[OH- ]+[PO43-]
B: [H2PO4-]+2´[H3PO4]=[PO43-]
C: [H+]+[H2PO4-]+[H3PO4]=[OH- ]+[PO43-]
D: [HPO42-]+[H2PO4-]+2´[H3PO4]=[PO43-]
A: [H+]+[H2PO4-]+2´[H3PO4]=[OH- ]+[PO43-]
B: [H2PO4-]+2´[H3PO4]=[PO43-]
C: [H+]+[H2PO4-]+[H3PO4]=[OH- ]+[PO43-]
D: [HPO42-]+[H2PO4-]+2´[H3PO4]=[PO43-]
举一反三
- 制造化肥〝普钙〞的主要原料是:() A: CaCO<sub>3</sub>+H<sub>3</sub>PO<sub>4</sub> B: Ca<sub>5</sub>F(PO<sub>4</sub>)<sub>3</sub>+H<sub>2</sub>SO<sub>4</sub> C: CaF<sub>2</sub>+H<sub>3</sub>PO<sub>4</sub> D: CaSO<sub>4</sub>+H<sub>3</sub>PO<sub>4</sub>
- 下列磷的含氧酸中是()亚磷酸。 A: H<sub>3</sub>PO<sub>2</sub> B: H<sub>3</sub>PO<sub>3</sub> C: H<sub>3</sub>PO<sub>4</sub> D: H<sub>3</sub>PO<sub>5</sub>
- Na2HPO4的质子条件式是() A: [H+]+ [H3PO4]= [HPO42-] + 2 [PO43-] +[OH-] B: [H+]+ [H3PO4]= [H2PO4-] + [PO43-] +[OH-] C: 2 [H3PO4] + [H2PO4-]+ [H+]= [PO43-] +[OH-] D: [H+]+ [H3PO4]= [HPO42-] + 2 [PO43-]
- 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-]
- 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-]