Determine if a solution containing [H+] = 1.5 x 10 (to the -10 power) is acidic, basic or neutral?
2017-05-09 11:50 pm
First, how do I solve the equation, then I can figure out if it is acidic etc.
回答 (2)
2017-05-09 11:59 pm
✔ 最佳答案
pH = - log 1.5 × 10^-10 = 9.8So it's basic.
2017-05-10 12:01 am
Method 1 :
[H⁺] = 1.5 × 10⁻¹⁰ M
pH = -log[H⁺] = -log(1.5 × 10⁻¹⁰) = 9.8 > 7.0
As pH > 7.0, the solution is basic.
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Method 2 :
[H⁺] = 1.5 × 10⁻¹⁰ M
[OH⁻] = Kw/[H⁺] = (1.0 × 10⁻¹⁴) / (1.5 × 10⁻¹⁰) M = 6.67 × 10⁻⁵ M > 1.5 × 10⁻¹⁰ M
As [OH⁻] > [H⁺], the solution is basic.
[H⁺] = 1.5 × 10⁻¹⁰ M
pH = -log[H⁺] = -log(1.5 × 10⁻¹⁰) = 9.8 > 7.0
As pH > 7.0, the solution is basic.
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Method 2 :
[H⁺] = 1.5 × 10⁻¹⁰ M
[OH⁻] = Kw/[H⁺] = (1.0 × 10⁻¹⁴) / (1.5 × 10⁻¹⁰) M = 6.67 × 10⁻⁵ M > 1.5 × 10⁻¹⁰ M
As [OH⁻] > [H⁺], the solution is basic.
收錄日期: 2021-04-18 16:12:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170509155043AAH7nxW