In order to increase the solubility of PbSO4(s), which of the following compounds should be added
A: Pb(NO3)2
B: Na2SO4
C: H2O
D: NH4Ac
A: Pb(NO3)2
B: Na2SO4
C: H2O
D: NH4Ac
举一反三
- 下列电池中,哪个电池反应不可逆:()()A.()Zn()(s)|Zn()2+()||Cu()2+()|()Cu(s)()B.()Zn()(s)|H()2()SO()4()|()Cu(s)()C.()Pt,H()2()(g)|HCl(aq)|AgCl()(s),Ag(s)()D.()Pb()(s),PbSO()4()(s)|H()2()SO()4()(aq)|()PbSO()4()(s),PbO()2()(s)
- 下列试剂中能使CaSO[sub]4[/](s)溶解度增大的是( ) A: CaCl<sub>2</sub> B: Na<sub>2</sub>SO<sub>4</sub> C: NH<sub>4</sub>Ac D: H<sub>2</sub>O
- 在相同浓度下,各溶液pH值由大到小的顺序是 ()。 A: ANaOH>NH<sub>3</sub>²H<sub>2</sub>O>NH<sub>4</sub>Cl>HCl>H<sub>2</sub>SO<sub>4</sub> B: BNaOH>NH<sub>3</sub>²H<sub>2</sub>O>NH<sub>4</sub>Cl>H<sub>2</sub>SO<sub>4</sub>>HCl C: CNaOH>NH<sub>3</sub>²H<sub>2</sub>O>HCl>NH<sub>4</sub>Cl>H<sub>2</sub>SO<sub>4</sub>
- 下列溶液pH值最高的是 ( ) A: Na<sub>2</sub>SO<sub>4</sub> B: Na<sub>2</sub>CO<sub>3</sub> C: NH<sub>4</sub>Cl D: NH<sub>4</sub>Ac
- 硫的氧化数为+2的化合物是( ) A: Na<sub>2</sub>SO<sub>3</sub> B: Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> C: H<sub>2</sub>S<sub>4</sub>O<sub>6</sub> D: H<sub>2</sub>SO<sub>4</sub>