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A solution is made by a dissolving 16.8 g of sodium fluoride , NaF , in...

A solution is made by a dissolving 16.8 g of sodium fluoride , NaF , in enough water to make exactly 500.ml of solution . Calculate the molarity of each species: NaF, Na+ and F-.

Solutions

Expert Solution

molarity   = W*1000/G.M.Wt * volume of solution in ml

              = 16.8*1000/42*500

              = 0.8M

NaF(aq) -------------> Na^+ (aq) + F^-(aq)

0.8M                         0.8M             0.8M

[NaF]    = 0.8M

[Na^+]   = 0.8M

[F^-]   = 0.8M


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