Sodium hydrogencarbonate powder reacts with dilute citric acid solution to produce carbon dioxide gas in an endothermic reaction.
sodium hydrogencarbonate+citric acid→sodium citrate+water+carbon dioxide \text{sodium hydrogencarbonate} + \text{citric acid} \rightarrow \text{sodium citrate} + \text{water} + \text{carbon dioxide} sodium hydrogencarbonate+citric acid→sodium citrate+water+carbon dioxideA student investigated the effect of doubling the concentration of the citric acid on this reaction.
The student made the following prediction:
"When the concentration of the citric acid is doubled, the initial rate of reaction will double and the overall reaction will show a greater decrease in temperature."
Devise a plan, including the apparatus you would use, to test this student's complete prediction.
You are provided with solid sodium hydrogencarbonate powder, a thermometer, and two bottles of dilute citric acid solution. One bottle of citric acid is exactly double the concentration of the other.
