题目
CHM-1020-LD01.2025SU Exam 2
匹配题
Match the correct response When the pH of a solution rises what happens to the followings 1: [H3O+] [H3O+] 2: pOH 3: [OH-] [OH-] 4: [H3O+]x [OH-] [H3O+] x [OH-]
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标准答案
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思路分析
When the pH of a solution increases (becomes more basic), we can reason through each quantity in turn and see how it behaves.
1) [H3O+] (hydronium concentration): As pH rises, the solution is less acidic, which means the concentration of hydronium ions decreases. This is the foundational relation between pH and [H3O+], tied to the definition pH = -log[H3O+]. Therefore, the expected trend for [H3O+] is a decrease.
2) pOH: Since pH and pOH are linked by pH + pOH = 14 (at 25°C for aqueous solutions), if pH increases, pOH must increas......Login to view full explanation登录即可查看完整答案
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