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Citric Acid (1 Viewer)

Leasha23

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Okay...
According to my chemistry teacher, citric acid is CH2COOH-HOCCOOH-CH2COOH... this I am comfortable with!

My question is, is citric acid monoprotic or diprotic? AND if someone could give me the equation of its ionisation this would be veeeeeery appreciated thankyou!!

LeAsHa :)
 

Xayma

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Triprotic. Three carboxylic acid groups.

It ionises by letting a hydrogen atom go from the carboxylic acid groups.
 

Leasha23

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Xayma said:
Triprotic. Three carboxylic acid groups.

It ionises by letting a hydrogen atom go from the carboxylic acid groups.
Thanks for that! Will one of the carboxylic acid groups ionise preferentially, or does it not matter which order u show the ionisation in?
 

Xayma

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Just show it as C<sub>6</sub>H<sub>8</sub>O<sub>7</sub> you wont be asked to show structual progressive ionisation as it will take too long.
 

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