Final answer:
PepsiCo's trade of soft drink syrup concentrate with the Soviet Union for Stolichnaya vodka is an example of barter, a direct exchange of goods without money.
Step-by-step explanation:
The type of countertrade where PepsiCo traded soft drink syrup concentrate with the Soviet Union for Stolichnaya vodka is known as 1) Barter. Barter is a form of countertrade that involves a direct exchange of goods or services, without the use of money or a third party. In this case, PepsiCo exchanged their product, soft drink concentrate, directly for another product, vodka, from the Soviet Union.