The rate of a chemical reaction increases as the temperature of the reacting materials increases. Baking powder gives oft carbon dioxide gas when it is mixed with water.
A spoonful of dry baking powder is added to a glass of cold water. An identical quantity is added to a glass of hot water. Which of the following results would occur?
(1) Bubbles would form first in the hot
water.
(2)
Bubbles would form first in the cold
water.
(3)
No differences would be observed between the reactions inside the glasses.
(4)
(5)
No bubbles would be formed in the cold water.
No bubbles would be formed in the hot water.
(1) Bubbles would form first in the hot water.
This is because the rate of the chemical reaction between the baking powder and water will be faster in the hot water due to the increased temperature, leading to the formation of bubbles sooner compared to the reaction in the cold water.