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【简答题】
某三元酸的解离常数依次为 1 × 10 –2 、 1 × 10 –6 和 1 × 10 –12 ,用 NaOH 标准溶液滴定该酸溶液至第一滴定终点时,溶液的 pH = ,可选用 作指示剂;滴定到第二滴定终点时,溶液的 pH = ,用 作指示剂。
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【单选题】How careless it was _______ Millie to make _______ many silly mistakes in the Math exam!
A.
of; so
B.
for; such
C.
for; so
D.
of; such
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