A、pH>2.06
B、pH>2.72
C、pH>7.10
D、pH>8.02
更多“25℃时，H<sub>2</sub>在锌上的超电势为0.7V，φ<sup>θ</sup>（Zn<sup>2+</sup>/Zn）=-0.763V，电解一含有Zn<sup>2+</sup>（a=0.01）的溶液，为了不使H<sub>2</sub>析出，溶液的pH值至少应控制在（）”相关的问题
A、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub> B、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> C、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub>
A、H<sub>2sub>；CH<sub>4sub>；C<sub>2sub>H<sub>2sub>；C0 B、H<sub>2sub>；C<sub>2sub>H<sub>2sub> C、H<sub>2sub>
A、H<sub>2sub>，CH<sub>4sub>，C<sub>2sub>H<sub>2sub>，C0 B、H<sub>2sub>，C<sub>2sub>H<sub>2sub> C、H<sub>2sub>
A、H<sub>1sub>、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub> B、H<sub>1sub>、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>A C、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>、H<sub>4sub> D、H<sub>2sub>A、H<sub>2sub>B、H<sub>3sub>A、H<sub>4sub>
A、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> B、CH<sub>4sub>、CO、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>、C<sub>2sub>H<sub>2sub> C、CH<sub>4sub>、C<sub>2sub>H<sub>2sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub> D、CO、CO<sub>2sub>、H<sub>2sub>、CH<sub>4sub>、C<sub>2sub>H<sub>4sub>、C<sub>2sub>H<sub>6sub>
A、H<sub>1sub>>H<sub>2sub>；P<sub>1sub>=P<sub>2sub> B、H<sub>1sub>=H<sub>2sub>；P<sub>1sub>>P<sub>2sub> C、H<sub>1sub>>H<sub>2sub>；P<sub>1sub>>P<sub>2sub> D、H<sub>1sub>=H<sub>2sub>；P<sub>1sub>=P<sub>2sub>
A、C<sub>2sub>H<sub>2sub>、O<sub>2sub> B、CO<sub>2sub>、CO、H<sub>2sub> C、H<sub>2sub>O、N<sub>2sub>
A、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>→CO B、H<sub>2sub>→CO→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub> C、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→CO→C<sub>2sub>H<sub>2sub> D、CO→H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>
A、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> B、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub> C、△H<sub>1sub>=△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>=△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub>
A、△H<sub>1sub>+ △H<sub>2sub>+△H<sub>3sub> =△H<sub>4sub> B、△H<sub>1sub>+ △H<sub>2sub> = △H<sub>3sub> +△H<sub>4sub> C、（△H<sub>1sub>+ △H<sub>2sub>）－（△H<sub>3sub> +△H<sub>4sub>）=△H<sub>5sub> D、△H<sub>1sub>＋△H<sub>2sub>＋△H<sub>3sub>＋△H<sub>4sub> =△H<sub>5sub>
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