Question

for the equation 2KCl+CaF₂->2KF+CaCl₂, 55.1 grams of KCl is reacted with 46.7 grams of CaF2, how many moles of KF will be produced if all KCl reacts?

Answer 1

Here the equation is

By using the law of conservation of mass law

Here 2 mole of is producing 2 moles of KF

we know the 1 mole is equal to gm molecular mass

The gram molecular mass of is 74.55 gm and the molar mass of is 58.1 gm

2 mole of is 149.1gm and 2 mole of is 116.2 gm

Now we can write that :

of is producing   of

of will produce    of .

Hence the 42.94gm amount of will be produced if all KCl reacts.