A granular substance is added to a liquid. Which of the following would
provide evidence to suggest a
chemical change has taken place?
O
A The liquid gives off heat.
B The granules dissolve
completely.
c The volume of the liquid
increases.
D The granules seem to get
smaller.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

where are the choice options?

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24