MCQ
Select the set of amphiprotic species?
- A${H_3}{O^ + },HPO_4^{ - 2},HCO_3^ - $
- B${H_2}O,HPO_3^{ - 2},{H_2}PO_2^ - $
- ✓${H_2}PO_4^ - ,{H_2}PO_3^ - ,{H_2}O$
- DAll of these
✓
Answer
Correct option: C.
${H_2}PO_4^ - ,{H_2}PO_3^ - ,{H_2}O$
c
$H _2 PO _4^{-}, H _2 PO _3^{-}, H _2 O$ is the set of amphiprotic species.
$H _2 PO _4^{-}, H _2 PO _3^{-}, H _2 O$ is the set of amphiprotic species.
Amphiprotic species can behave both like an acid and a base. They can donate or accept a proton.
$\underset{\text { Conjugate acid }}{ H _3 PO _4} \stackrel{+ H ^{+}}{\longleftarrow} \underset{\text { Amphiprotic }}{\stackrel{ H _2 PO _4^{-}}{ }} \stackrel{- H ^{+}}{\longrightarrow} \underset{\text { Conjugate base }}{ HPO _4^{2-}}$
$\underset{\text { Conjugate acid }}{ H _3 PO _3} \stackrel{+ H ^{+}}{\longleftarrow} \underset{\text { Amphiprotic }}{ H _2 PO _3^{-}} \stackrel{- H ^{+}}{\longrightarrow} \underset{\text { Conjugate base }}{ HPO _3^{2-}}$
$\underset{\text { Conjugate acid }}{ H _3 O ^{+}} \stackrel{+ H ^{+}}{\longleftarrow} \underset{\text { Amphiprotic }}{ H _2 O} \stackrel{- H ^{+}}{\longrightarrow} \underset{\text { Conjugate base }}{ OH ^{-}}$
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