Which of the following steps can be used to identify a double replacement reaction? (5 points) Select one: a. Check whether the products are salt and water. b. Check whether the reactants are an acid and a base. c. Check if the ions of two compounds exchange places. d. Check if one element replaces another element in a compound.

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)