What is the theoretical range of color change of a weak basic indicator whose Kb is 1.0×10－4 ?
A、pH 4.00～6.00;
B、pH 5.00～7.00;
C、pH 6.00～8.00;
D、pH 7.00～9.00
发布时间：2025-07-28 23:25:31
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答案：pH 4.00～6.00
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