氢硫酸电离常数K<sub>1</sub>= 1×10<sup>-7</sup>,K<sub>2</sub>=1×10<sup>-13</sup>,在0.1mol·dm<sup>-3</sup> H<sub>2</sub>S水溶液中溶液的pH值是()
A、10-2
B、2
C、3
D、4
A、10-2
B、2
C、3
D、4
A、K1257;<sub>1sub>=K1257;<sub>2sub> B、K1257;<sub>1sub>=2K1257;<sub>2sub> C、K1257;<sub>1sub>=1/2K1257;<sub>2sub> D、K1257;<sub>1sub>=(K1257;<sub>2sub>)2
A、K<sub>1sub>+K<sub>2sub> B、K<sub>1sub>-K<sub>2sub> C、K<sub>1sub>·K<sub>2sub> D、K<sub>1sub>/K<sub>2sub>
A、K<sub>1sub>+K<sub>2sub> B、K<sub>1sub>-K<sub>2sub> C、K<sub>1sub>·K<sub>2sub> D、K<sub>1sub>/K<sub>2sub>
A、E<sub>1sub>=E<sub>2sub>;K<sub>1sub>=K<sub>2sub> B、E<sub>1sub>≠E<sub>2sub>;K<sub>1sub>=K<sub>2sub> C、E<sub>1sub>=E<sub>2sub>;K<sub>1sub>≠K<sub>2sub> D、E<sub>1sub>≠E<sub>2sub>;K<sub>1sub>≠K<sub>2sub>
A、Kθ<sub>asub>和电离度均变大 B、Kθ<sub>asub>和电离度均变小 C、Kθ<sub>asub>不变,电离度增大 D、Kθ<sub>asub>不变,电离度减小
A、KØ<sub>1sub>/ KØ<sub>2sub> B、KØ<sub>2sub>/KØ<sub>1sub> C、KØ<sub>1sub>· KØ<sub>2sub> D、KØ<sub>1sub>- KØ<sub>2sub>
A、Δ<sub>rsub>G<sub>msub>(1)0=2Δ<sub>rsub>G<sub>msub>(2)0,K<sub>1sub>0=K<sub>2sub>0 B、Δ<sub>rsub>G<sub>msub>(1)0=2Δ<sub>rsub>G<sub>msub>(2)0,K<sub>1sub>0=(K<sub>2sub>0)2 C、Δ<sub>rsub>G<sub>msub>(1)0=Δ<sub>rsub>G<sub>msub>(2)0,K<sub>1sub>0=(K<sub>2sub>0)2 D、Δ<sub>rsub>G<sub>msub>(1)0=Δ<sub>rsub>G<sub>msub>(2)0,K<sub>1sub>0=K<sub>2sub>0
A、Kθ<sub>1sub>+ 3Kθ<sub>2sub>-Kθ<sub>3sub> B、Kθ<sub>1sub>Kθ<sub>2sub>Kθ<sub>3sub> C、Kθ<sub>1sub>Kθ<sub>2sub>/Kθ<sub>3sub> D、Kθ<sub>1sub>Kθ3<sub>2sub>/Kθ<sub>3sub>