Acetic acid (shown below) has a Ką that is much smaller, 1.8x10-5. Why is fluoroacetic acid a stronger acid than acetic acid?

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Acetic acid (shown below) has a Ką that is much smaller, 1.8x10-5. Why is fluoroacetic acid a stronger acid than acetic acid?
O The fluorine atom withdraw electrons, ultimately from the O atoms making them positive which then repel H*.
The fluorine atom has more electrons than the hydrogen atoms and can donate these electrons to the rest of the molecule,
weakening the O-H bond in fluoroacetic acid compared to acetic acid.
The fluorine atom in fluoroacetic acid is very electronegative, withdrawing electrons from the rest of the molecule ultimately
making the O-H bond weaker.
O This statement is not true, acetic acid is a stronger acid than fluoroacetic acid.
Transcribed Image Text:Acetic acid (shown below) has a Ką that is much smaller, 1.8x10-5. Why is fluoroacetic acid a stronger acid than acetic acid? O The fluorine atom withdraw electrons, ultimately from the O atoms making them positive which then repel H*. The fluorine atom has more electrons than the hydrogen atoms and can donate these electrons to the rest of the molecule, weakening the O-H bond in fluoroacetic acid compared to acetic acid. The fluorine atom in fluoroacetic acid is very electronegative, withdrawing electrons from the rest of the molecule ultimately making the O-H bond weaker. O This statement is not true, acetic acid is a stronger acid than fluoroacetic acid.
The weak acid, fluoroacetic acid, is a highly toxic
substance. It has a Ka = 2.50x10-3.
H
F
H
Transcribed Image Text:The weak acid, fluoroacetic acid, is a highly toxic substance. It has a Ka = 2.50x10-3. H F H
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