A student activates an instant cold pack by breaking an inner pouch
CHEMISTRY · Single correct · AP · Chemistry · Thermochemistry · Thermochemistry
Problem
A student activates an instant cold pack by breaking an inner pouch, causing an endothermic dissolution process to occur. Immediately after activation, the pack feels cold to the touch. Which of the following best describes the heat (q) for the pack and the related energy transfer?
(a) q is negative; thermal energy is transferred from the surroundings to the contents of the pack.
(b) q is negative; thermal energy is transferred from the pack to the surroundings.
(c) q is positive; thermal energy is transferred from the surroundings to the contents of the pack.
(d) q is positive; thermal energy is transferred from the pack to the surroundings.