Tuesday
March 3, 2015

Homework Help: chemisrty

Posted by susan on Sunday, June 8, 2014 at 11:05am.

Rank following acids frommost to least acidic:
hydrocyanic acid (HCN) Ka = 6.2 10−10
hypoiodous acid (HOI) Ka = 2 10−11
chlorous acid (HClO2) Ka = 1.2 10−2
acetic acid (CH3COOH) Ka = 1.8 10−5
1. HOI > HClO2 > CH3COOH > HCN
2. CH3COOH > HCN > HOI > HClO2
3. HClO2 > CH3COOH > HCN > HOI
4. HCN > HOI > HClO2 > CH3COOH

Is the answer #3?

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