Answer:
736.1 g of soda ash
Explanation:
Data given:
Amount of sodium bicarbonate = 1 Kg
convert Kg to g
1 Kg = 1000 g
Amount of soda ash needed = ?
Solution:
First we look for the reaction by which soda ash gives sodium bicarbonate.
Chemical formulas
c NaHCO₃
Soda Ash = Na₂CO₃
So the reaction is given below:
Na₂CO₃ + H₂O + CO₂ ------------> 2 NaHCO₃
So,
now look for the amount of soda ash and NaHCO₃
Na₂CO₃ + H₂O + CO₂ ------------> 2 NaHCO₃
1 mole 2 mole
As,
one mole of Na₂CO₃ (soda ash) gives 2 moles of sodium bicarbonate (NaHCO₃).
Now convert moles to mass
For which molar masses are given below
Molar mass of Na₂CO₃ = 106 g/mol
Molar mass of NaHCO₃ = 72 g/mol
So,
Na₂CO₃ + H₂O + CO₂ ------------> 2 NaHCO₃
1 mole (106 g/mol) 2 mole (72 g/mol)
106 g 144 g
Apply unity formula
106 g of Na₂CO₃ ≅ 144 grams NaHCO₃
X g of Na₂CO₃ ≅ 1000 grams NaHCO₃
Do cross multiplication
X g of Na₂CO₃ = 106 g x 1000 g / 144 g
X g of Na₂CO₃ = 736.1 g
So, 736.1 g of soda ash needed to produce 1000 g or 1 kg of sodium bicarbonate.
