Why are three hydrogren atoms acidic in Citric Acid?
Answer:
There are : 8 Hydrogen atoms: MW 8
There are : 6 Carbon Atoms: MW 72
There are: 7 Oxygen atoms MW 112
MW of Citric Acid is 192
With regards to the three acidic hydrogen atoms, you have three acid groups C00H. In these groups the high electronegativity of the COO means that the O-H bond can be easily broken and a proton (H+) donated - hence an acid.
Citric acid is 2-hydroxypropane-1, 2, 3-tricarboxylic acid. There are 3 carboxyl (COOH) groups, thus 3 hydrogens that can be acidic. The molecular mass is 192.027 g/mol
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