Question

In: Chemistry

In the laboratory you dissolve 21.5 g of ammonium chloride in a volumetric flask and add water to a total volume of 500 . mL.

In the laboratory you dissolve 21.5 g of ammonium chloride in a volumetric flask and add water to a total volume of 500 . mL.

Solutions

Expert Solution

weight of NH4Cl     = 21.5g

gram molecular weight of NH4Cl   = 53.491g/mole

volume of solution   = 500ml

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

               = 21.5*1000/53.491*500   = 0.804M

NH4Cl(aq) -----------> NH4^+(aq) + Cl^-

0.804M                        0.804M        0.804M

concentration of NH4^+   = 0.804M

concentration of Cl^-       = 0.804M


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