InterviewSolution
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InterviewSolution
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25.3 g of sodium carbonate, `Na_(2)CO_(3)` is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ions, `Na^(+)` and carbonate ions, `CO_(3)^(2-)` are respectively (Molar mass of `NaCO_(3)=106g mol^(-1)`)A. `0.477Mand0.477MM`B. `0.955Mand1.910`C. `1.910Mand0.955M`D. `1.90Mand1.910M` |
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Answer» Correct Answer - C `"Molarity"=(25.3xx1000)/(106xx250)=0.955M` `Na_(2)CO_(3)to2Na^(+)+CO_(3)^(2-)` `=2xx0.955+0.955M` `=1.910M+0.955M` `:.M_(Na^(+))=2xx0.955=1.910M` `M_(CO_(3)^(2-))=0.955M` |
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