Question

calculate how many moles of sulphur dioxide will be evolved when 5 moles of sulphur is reacted with oxygen​

Answer 1

When 5 moles of sulphur is reacted with oxygen, 5 moles of sulphur dioxide is evolved.

• From a reaction, it can determined how many moles of a particular reactant give a particular product.

• For the question that is given, the reaction goes as follows :

S + O₂ → SO₂

• According to the reaction, the number of moles of sulphur and sulphur dioxide are equal.

• One mole of sulphur gives 1 mole of sulphur dioxide.

Therefore, 5 moles of sulphur wil evolve 5 × 1 moles of suplhur dioxide = 5 moles .

Answer 2

The amount of SO2 evolved is 5 moles.

Explanation:

We are given that:

Number of moles of sulphur = 5

To Find: Number of moles of SO2 = ?

Solution:

The equation is:

S + O2 ----> SO2

5 mole of sulphur reacts with 5 mole of oxygen to give 5 moles of sulphur dioxide.

Mass of 1 mole of SO2 = 64 g  

5 mole SO2 has 5 x  64 gof SO2 = 320 g of  SO2.

Thus the amount of SO2 evolved is 5 moles.