First slide

Acidic buffer

Question

The total number of different kind of buffers obtained during the titration of $H_{3} {PO}_{4}$ with NaOH are

Easy

A

3
B

1
C

2
D

Zero

Solution

${NaH}_{2} {PO}_{4} + H_{3} {PO}_{4}; {NaH}_{2} {PO}_{4} + {Na}_{2} {HPO}_{4}^{};$
${NaH}_{2} {PO}_{4} + {Na}_{3} {PO}_{4} .$

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