A.合成氨工业中,N2和H2的最佳配比应为物质的量之比1:3 |
B.电解法精炼粗铜,用纯铜作阴极 |
C.工业上电解饱和食盐水制烧碱,用离子交换膜阻止0H-移向阳极 |
D.在镀件上电镀锌,锌作阳极 |
压强/MPa 温度/℃ | 0.1 | 0.5 | 1 | 10 |
400 | 99.2% | 99.6% | 99.7% | 99.9% |
500 | 93.5% | 96.9% | 97.8% | 99.3% |
600 | 73.7% | 85.8% | 89.5% | 96.4% |
A.NaOH溶液、酚酞试液 | B.KMnO4溶液、稀H2SO4 |
C.碘水、淀粉溶液 | D.氨水、酚酞试液 |
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