Answer to Question #126345 in General Chemistry for Giorgi

Question

Does mixing sugar and gunpowder make explosion stronger?

Answer 1

Potassium nitrate decomposes, the released oxygen has to diffuse to the charcoal or sulfur in which it burns. Accordingly, gunpowder explodes at only a few metres a second. 

Sugar providing carbon which is react with gunpowder ( mixture of potassium nitrate and sulfer) which burn in the presence of sugar ,for that reason mixing of sugar and gunpowder make explosion stronger.