How many grams of calcium sulfate are produced from 10 grams of calcium nitrate and how many grams of calcium sulfate are produce from 10 grams of lithium sulfate.

Question

asked Jun 27, 2022 29.1k views

1 Answer

Lewis Smith · Answer 1 · 2022-07-02T10:54:00+0000

Answer: 8.30 g of calcium sulfate are produced from 10 grams of lithium sulfate.

Step-by-step explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} Ca(NO_3)_2=(10g)/(164g/mol)=0.061moles$

$\text{Moles of} Li_2SO_4=(10g)/(110g/mol)=0.091moles$

$Ca(NO_3)_2+Li_2SO_4\rightarrow 2LiNO_3+CaSO_4$

According to stoichiometry :

1 mole of
Ca(NO_3)_2 require = 1 mole of
Li_2SO_4

Thus 0.061 moles of
Ca(NO_3)_2 will require=
(1)/(1)* 0.061=0.061moles of
Li_2SO_4

Thus
Ca(NO_3)_2 is the limiting reagent as it limits the formation of product and
Li_2SO_4 is the excess reagent.

As 1 mole of
Ca(NO_3)_2 give = 1 mole of
CaSO_4

Thus 0.061 moles of
Ca(NO_3)_2 give =
(1)/(1)* 0.061=0.061moles of
CaSO_4

Mass of
$CaSO_4=moles* {\text {Molar mass}}=0.061moles* 136g/mol=8.30g$

Thus 8.30 g of calcium sulfate are produced from 10 grams of lithium sulfate.