Question

if 10 g of compound a is added to 8.4 g of another compound b a residue c of 12.4 g is formed along with the gaseous product d find the mass of the gas released by applying appropriate law​

Answer 1

Explanation:

ANSWER

The mass of residue, is CH3COONa solution, should be 24g of CH3COONa solution.

In this reaction, sodium bicarbonate reacts with acetic acid to produce sodium acetate, carbon dioxide and water

NaHCO3+CH3COOH⟶CH3COONa+CO2+H2O

According to law of conversation of masses,

total masses of reactants = total masses of products

reactants are 8.4g NaHCO3 and 20g CH3COOH.

total mass of reactants is =28.4g

mass of residue = (28.4g reactants mass) − (4.4g CO2)

                            = 24.0g residue (sodium acetate solution)

mass of residue is thus 24 grams.

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