1. Find the thermal effect of a chemical reaction: a) at constant pressure; b) at a constant volume at T=298 K. Take the heats of formation of all substances from the reference book [5, 6]. Indicate whether the reaction proceeds with the release or absorption of heat.
CaCO3(t) = CaO(t) CO2(g)

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.