Question

The STRONGEST acid is: a) CF3CH2COOH b) CHF2COOH c) CH2FCOOH d) CF2COOH e) CHF2CH2COOH *explain why

The STRONGEST acid is:

a) CF3CH2COOH

b) CHF2COOH

c) CH2FCOOH

d) CF2COOH

e) CHF2CH2COOH

*explain why

Science   Chemistry   
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Homework Answers

Answer #1

NOTES:

a strong acid must have a very electornegative pole

the shortest molecule will have a higher polarity density

therefore

CF3CH2COOH --> foog option, 3 carbons, 3F ions

CHF2COOH --> good option, 2 carbons, 2 F

CH2FCOOH --> weaker than previous.

CF2COOH --> can't exist, (excess of electrons)

CHF2CH2COOH -- too long

analysis must be done on

CF3CH2COOH --> foog option, 3 carbons, 3F ions

CHF2COOH --> good option, 2 carbons, 2 F

choose the shortest, since ratio are C:F similar

so

CHF2COOH will be the stronger acid

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