You told us the answer in the first sentence.
A !
The rate of a chemical reaction increases as the temperature of reacting materials increases. baking Powder gives off carbon dioxide gas then 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??
A Bubbles would form first in the hot water.
B bubbles would from first in the cold water.
C No differences would be observed between the reactions inside the glasses.
D N bubbles would be formed in the cold water.
E No bubbles would be formed in the hot water.
2 answers
I don't think the answers have anything to do with the statement. The statement, for the most part, is correct that the rate of a reaction increases with temperature. However, that assumes a reaction takes place and I don't believe there is a reaction between baking soda and water, either hot or cold. The decomposition of NaHCO3 occurs but not at temperatures below100 C. Answers C, D, E are correct. If you're talking about solubility, and there is no hint about that, the hot water will dissolve the powder much faster. The point of my response is that if no reaction occurs there is no rate to consider.
1 answer