Which of the following statements are correct?

Options

A. The equivalent weight of `Ba_(3)(PO_(4)) is 100.1`
B. The equivalent weight of `Na_(3)PO_(4) is 54.66`
C. The equivalent weight of `H_(3)PO_(4) is 32.67`
D. The equivalent weight of `Ca(OH)_(2) is 36.5`

Answer

A, B, C

Explanation

Equivalent wt.of compound
`E=("Molecular wt.of compound")/("Total charge on cationic/anionic part")`
`:. E_(Ba_(3)(PO_(4))_(2))=(M_(Ba_(3)(PO_(4))_(2)))/(6)=(601)/(6)=100.1`
( `:.` Total charge on cations or anions`=6`)
Also say for `Ba_(3)(PO_(4))_(2)`
`E_(Ba_(3)(PO_(4))_(2))=E_(Ba^(2+))+E_(PO_(4)^(3-))`
`=(at.wt."of" Ba)/(2)+("radical wt.of"PO_(4)^(3-))/(3)`
`(137)/(2)+(9)/(3)=100.1`
`E_(Na_(3)PO_(4))=(M_(Na_(3)PO_(4)))/(3)=(164)/(3)=54.66`
( `:.` Total charge on cations or anions `=3`)
`E_("Acid")=("mol.wt".)/("Basicity")`
`:. E_(H_(3)PO_(4))=(98)/(3)=32.67`
`E_("base")=("Mol.wt.")/("Acidity")`
`E_(Ca(OH)_(2))=(71)/(2)=35.5`