Question

How much calcium chloride will react with100mg of soda ash?

Answer 1

105mg of calcium chloride
`CaCl_(2)`

Step-by-step explanation:

The molecular formula of calcium chloride is
`CaCl_(2)` and the molecular formula of soda ash is
`Na_(2)CO_(3)`

First of all you should write the balanced reaction between both compounds, so:

`CaCl_(2)+Na_(2)CO_(3)=2NaCl+CaCO_(3)`

Then you should have the molar mass of the two compounds:

Molar mass of
`CaCl_(2)=110.98(g)/(mol)`

Molar mass of
`Na_(2)CO_(3)=105.98(g)/(mol)`

Now with stoichiometry you can find the mass of calcium chloride that reacts with 100mg of soda ash, so:

`100mgNa_(2)CO_(3)*(1molNa_(2)CO_(3))/(105.98gNa_(2)CO_(3))*(1molCaCl_(2))/(1molNa_(2)CO_(3))*(110.98gCaCl_(2))/(1molCaCl_(2))=105mgCaCl_(2)`