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The concentration of solutions can be expressed in number of ways such that Normality, Molarity, Molality, Mole fractions, Strength, `%` by weight, `%` by volume and `%` by strength. The molarity of ionic compound is usually expressed as formality beacuse we use formula weight of ionic compound. Addition of water to a solution changes all these terms, however increase in temperature does not change molality, mole fraction and `%` by weight terms. Number of oxalate ions in `100 mL` of `0.1N` oxalic acis is:A. `(N_(A))/(100)`B. `(N_(A))/(20)`C. `(N_(A))/(200)`D. `(N_(A))/(1000)` |
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Answer» Correct Answer - C Meq.of oxalate ion `=100xx0.1=10` `therefore` Milli-mole of oxalate ion `=(10)/(2)=5` ` therefore` No. of oxalate ion `=(N_(A)xx5)/(1000)=(N_(A))/(200)` |
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