Answer to Question #57577 in Chemistry for Emma

Question

Use collision theory to explain the following

Liquid gasoline will burn, but gasoline vapor will explode. (Hint: this example contains two factors.)

People who work in papaya-processing plants must wear gloves and masks for personal protection.

Campfires are stated with matches that are used to light loosely packed kindling (small pieces of very dry wood). (Hint: This example contains three factors).

Answer 1

Liquid state of gasoline allows chemical reaction only on its surface. Vaporized gasoline reacts in a volume, which increases the amount of effective collisions. That is why, liquid gasoline burns, but gasoline vapor explodes.

While working in the toxic atmosphere and wearing a protective mask, people inhibit collisions of harmful substances with their lungs. This helps to avoid poisoning.

Smaller water content makes comparative concentration of carbon atoms in dry wood greater. While increasing probability of reactants’ collision, this positively influences the reaction start and rate.