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【简答题】
如果用0.1mol/L HCl溶液滴定0.1mol/L NH 3 ·H 2 O 溶液,化学计量点时pH= ,滴定突跃范围为 ~ 4.30,选用 、溴甲酚绿做指示剂最合适,也可用溴酚蓝和 。
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A.
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B.
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C.
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A.
parent's;begin
B.
parents';begin
C.
parent's;begins
D.
parents';begins
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