Question

Uf 20g of caco3 and 25g of Hcl are mixed, what mass of co2 is produced?

Answer 1

Answer:

hey mate here is your answer

Explanation:

Here the moles of CaCO3 = Mass of CaCO3/

Molecular Mass

n= 20/100

n= 0.2

Moles of HCl = 20/36.5 = 0.54 mol

The reaction is  

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

For 2 mol of HCl, 1 mol CaCO3 is req.

This means for 0.54 mol HCl, 0.27 mol CaCO3 would be req.

But only 0.2 mol CaCO3 is present.

This means CaCO3 is Limiting Reagent.

For 1 mol CaCO3, 1 mol CO2 is formed.

Therefore moles of CO2 produced = 0.27

Mass of CO2 = 44 × 0.27

= 11.88 gm

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