Calculate the mass of sodium silicate that was formed by heating 120 g of silicon oxide (4) with sodium hydroxide?
April 29, 2021 | education
| The reaction for producing sodium silicate from silicon oxide and sodium hydroxide is described by the following chemical equation:
2NaOH + SiO2 = Na2SiO3 + H2O;
Determine the chemical amount of silicon oxide:
For this purpose, we divide its weight by the mass of 1 mole of the substance.
M SiO2 = 28 + 16 x 2 = 60 grams / mol;
N SiO2 = 120/60 = 2 mol;
The same amount of sodium silicate can be synthesized.
Let’s find its mass.
To do this, we multiply the amount of a substance by its molar weight.
M Na2SiO3 = 23 x 2 + 28 + 16 x 3 = 122 grams / mol;
m Na2SiO3 = 2 x 122 = 244 grams;
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