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If `0.228 g` of silver salt of dibasic acid gabe a residue of `0.162 g` of silver on ignition then molecular weight of the acid isA. 70B. 80C. 90D. 100 |
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Answer» Correct Answer - c Mass of silver salt taken`=0.228 gm` Mass of silver left`=0.162 gm` Basicity of acid `=2` Step`1-` To calculate the equivalent mass of silver salt `(E)` `=(E)/(108)=(0.228)/(0.162)=E=(0.228)/(0.162)xx108` `=1529`(Eq. mass o f silver salt `)` Step`2-` To calculate the eq. mass of acid. Eq. mass of acid `-` Eq. mass of silver salt`-`Eq. mass of `Ag+` Basicity `=152-108+1=152-109` `=43(` Eq. mass of acid `)` Step`3-` To determine the molecular mass of acid. Mol. mass of acid `=` Eq. mass of acid `xx` basicity `=45 x2=90`. |
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