MCQ
Conjugate base of $HPO_4^{2 - }$ is
- ✓$PO_4^{3 - }$
- B${H_2}PO_4^ - $
- C${H_3}P{O_4}$
- D${H_4}P{O_3}$
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$C{H_3} - C{H_2} - CH = C{H_2}\xrightarrow[{{H_2}{O_2}}]{{HBr}}$