Chemistry
Senior High
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請問如何去估算pH值等於多少?
濃度2.0×10’M之Ca(OH),其pH值最接近下列哪一項的數值?
(B) 6.70
(A) 6.40
(C) 7.30
(D) 7.40
(E) 7.60
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非常感謝妳,但是這題的答案是E🙏