水溶液呈中性是指（ ）。
A:
B: pH = 7
C: pH+pOH = 14
D: pOH = 7
A:
B: pH = 7
C: pH+pOH = 14
D: pOH = 7
举一反三
- 水溶液呈中性是指（） A: pH=7 B: [H]=[OH] C: pH+pOH=14 D: pOH=7
- 水溶液呈中性是指（ ）。 未知类型：{'options': ['', 'pH = 7', 'pH+pOH = 14', 'pOH = 7'], 'type': 102}
- 中性水溶液是指() A: pH=7 B: [H+]=[OH-] C: pH+pOH=14 D: pOH=7
- c(NaCl) = 0.1mol/L的NaCl水溶液的质子平衡式是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/9b7be57053c646c5aa738c0535f65770.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/b1382afa5c5d4951aef3b50dec2d582d.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/1887e7216893436fb1e402c407d2ffaa.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/c2d7158b33f44091a8b75598cbb3245d.png" />
- 已知<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/3b751d3b25514bec876427af5c1e59c1.png" />的z变换<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/6cd80d63c25f40f3930413d470be6bf3.png" />，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/44a7b63737404bcfab64da5ae36635f0.png" />的收敛域为（ ）时是因果序列。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/5ef40bb06be14e9099b67ab2070ee216.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/293e604c21c54aff8f2f0bb128871ad7.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/f8db782ebecd4e808769625106929a3f.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202107/67575d32d53542f9926a431d42780f0f.png" />