A: [H+] + [H2PO4- ]+[H3PO4] = [OH-] +[PO43-]
B: [H+] + [H2PO4- ]+2[H3PO4] = [OH-] +[PO43-]
C: [H+] +2[H3PO4] = [OH-] +[PO43-]+ [H2PO4- ]
D: [H+] + [H2PO4- ] = [OH-] +[PO43-]
举一反三
- 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-]
- 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-]
- (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-]。
- (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-]。
内容
- 0
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-]
- 1
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-]
- 2
Na2HPO4水溶液的质子条件式([H+]+[H2PO4-]+2[H3PO4]=[PO43-]+[OH-]
- 3
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>
- 4
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>