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Chemistry
The principal buffer present in human blood is
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Q. The principal buffer present in human blood is
KEAM
KEAM 2004
Equilibrium
A
$NaH_2PO_4+Na_2HPO_4$
0%
B
$H_3PO_4+NaH_2PO_4$
0%
C
$CH_3COOH+CH_3COONa$
29%
D
$Na_2HPO_4+Na_3PO_4$
43%
E
$H_2CO_3+HCO_3^-$
43%
Solution:
The principal buffer present in human blood is carbonic acid $(H_2CO_3) $ and sodium hydrogen carbonate $(NaHCO_3). $ This hepls in maintaining pH of the blood close to 7.4.