If 8.3g of KHCO3 are added to 12g of
CH3COOH solution, the residue is found to
weigh 18g. What is the mass of CO2
released in the reaction
KHCO3 + CH3COOH → CH3COOK +
H2O + CO2
Answers
Explanation:
If 6.3g of NaHCO3 are added to 15.0g of CH3COOH solution, the residue is formed to weigh 18.0g. What is the mass of CO2 released in this re..
If 6.3g of NaHCO3 are added to 15.0g of CH3COOH solution, the residue is formed to weigh 18.0g. What is the mass of CO2 released in
Ans: NaHCO3 + CH3COOH → CH3COONa + H2O + CO2
Molecular weights
NaHCO3 = 84
CH3COOH = 60
CH3COONa = 82
CO2 = 44
84 grams NaHCO3 reacts with 60 grams of CH3COOH to form 82 grams of CH3COONa and 44 grams of CO2.
Given 6.3 grams of NaHCO3 reacts with 15 grams of CH3COOH.
Number of moles of NaHCO3 = given weight/ moleculear weight
= 6.3/84
= 0.075moles
Number of moles of CH3COOH = 15/60
= 0.25
It is to be remember that 1 mole of reactants combines to produce 1 mole of products
Thus 0.075 moles of NaHCO3 will reacts with 0.075 moles of to produce 0.075 moles of CO2.
Weight of 1 mole of CO2 is = 44 grams
Weight 0.075 moles of CO2 = (0.075*44)
= 3.3 grams So 3.3 grams of CO2 will be produced in the reaction.
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