Jon P. answered • 05/01/15

Knowledgeable Math, Science, SAT, ACT tutor - Harvard honors grad

The unbalanced equation is:

AgNO

_{3}+ MgCl_{2 }---> AgCl + Mg(NO_{3})_{2}Balancing it is pretty simple...

2AgNO

_{3}+ MgCl_{2 }---> 2AgCl + Mg(NO_{3})_{2}If there are 300 ml of .75M MgCl

_{2}, that means that there are .3 * .75 = .225 moles of MgCl_{2}, since 300 ml = .3 l.Since there are 2 molecules of AgCl produced for every molecule of MgCl

_{2}, that means that .45 moles of AgCl will be produced.So the theoretical yield in grams will be .45 times the molecular mass of AgCl.

The molecular mass of AgCl is:

Ag -- 107.87

Cl -- 35.45

TOTAL -- 143.32

So the theoretical yield is .45 * 143.32 = 64.49 grams of AgCl.

If the actual yield is 55%, then .55 * 64.49 = 35.47 grams of AgCl will be produced.

Sorry, but the diagram can't be done here.