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Q.
What is the concentration of nitrate ions if equal-volumes of $ 0.1M\,AgN{{O}_{3}} $ and $ 0.1\text{ }M\text{ }NaCl $ are mixed together?
JamiaJamia 2009
Solution:
$ AgN{{O}_{3}}(aq)+NaCl(aq)\xrightarrow[{}]{{}}NaN{{O}_{3}}(aq) $ $ +AgCl(s) $ $ NO_{3}^{-} $ ions remain in the solution for $ NaN{{O}_{3}} $ is soluble in water. If V mL each of the two solution be mixed, the volume of the resulting solution $ =2\text{ }V $ Then $ 0.1\times V={{M}_{2}}\times 2V $ $ {{M}_{2}}=\frac{0.1}{2}=0.05 $