Question

model 2 – results of alka-seltzer® experiment
trial | number of alka-seltzer tablets | volume of vinegar (ml) | room pressure (kpa) | initial temp (°c) (vinegar solution) | final temp (°c) (final mixture)
trial 1 | 1 | 100.0 | 84 | 23.5 | 22.6
trial 2 | 2 | 100.0 | 84 | 23.5 | 21.5
trial 3 | 3 | 100.0 | 84 | 23.5 | 20.4
trial 4 | 4 | 100.0 | 84 | 23.5 | 19.2
trial 5 | 5 | 100.0 | 84 | 23.5 | 18.1

1. which trial in the model 2 data table corresponds to the reaction illustrated in model 1?

Explanation:

To determine which trial corresponds to the reaction in Model 1, we analyze the final temperature. If Model 1 shows an endothermic reaction (temperature decrease), we look for the trial with the lowest final temperature. Trial 5 has the lowest final temp (18.1°C), indicating the most significant temperature drop, likely matching the reaction in Model 1.

Answer:

Trial 5