Is there any evidence that a reaction has occurred?

current is changed
a precipitate is formed
the amount of ion in solution has changed
(pick one out of the three)

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

0.09 moles of sodium sulfate in 12 ml of solution