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Which of the following statements are correct?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` |
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Answer» Correct Answer - A::B::C 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` |
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