Consider the balanced chemical equation, mgcl2(aq) + 2agf(aq) → 2agcl(s) + mgf2(aq) if both reactants are completely consumed and we produce 20 formula units of agcl, how many ions of mg and f did we start with?

we started with 10 ions of Mg and 20 ions of F.

Explanation: The given balanced equation is:

From this balanced equation, 2 formula units of AgCl are formed by 2 formula units of AgF and 1 formula unit of .

From here, the ratio between AgCl and AgF is 2:2 that is 1:1 and the ratio between AgCl and is 2:1 ,

Since the ratio between AgCl and AgF is 1:1, 20 formula units of AgCl will be formed by 20 formula units of AgF.

The ratio between AgCl and is 2:1, so 20 formula units of AgCl will be formed by 10 formula units of .

One formula unit of contains one ion of Mg, so 10 formula units of will contain 10 ions of Mg.

Similarly, 1 formula unit of AgF contains one ion of F, so 20 formula units of AgF will contain 20 ions of F.

So, we started with 10 ions of Mg and 20 ions of F to make 20 formula units of AgCl.

fe 55.85 g/mol and h2o 18.02 g/mol.