Experiment #1
Experiments #2 & #3.
The best answer is answer a.
This is because mixing CaCl2 and phenol
red produced heat.
26. Which of the following statements could Jessie reasonably
infer (guess) from these new results?
a) CaCl2 requires phenol red solution to produce heat.
b) CaCl2 requires NAHCO3 and phenol red solution to produce
heat.
c) CaCl2 requires water to produce heat.
d) One more experiment is needed to determine the actual chemicals
that produce the heat..
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Slichter