How many grams of sodium silicate is formed by fusing 100g of sand containing 90% silicon oxide (IV) with soda (Na2CO3)?

The reaction for producing sodium silicate by fusing soda with sand is described by the following equation:

Na2CO3 + SiO2 = Na2SiO3 + CO2;

Let’s calculate the chemical amount of quartz sand.

To do this, we divide its weight by the mass of 1 mole of the substance.

M SiO2 = 28 + 16 x 2 = 60 grams / mol;

N SiO2 = 100 x 0.9 / 60 = 1.5 mol;

The same chemical amount of sodium silicate can be obtained.

Let’s determine its weight.

For this purpose, we multiply the amount of the substance by its molar weight.

M Na2SiO3 = 23 x 2 + 28 + 16 x 3 = 122 grams / mol;

m Na2SiO3 = 1.5 x 122 = 183 grams;