What do they put in chimneys of power stations to produce acid rain?

Chimneys of power stations typically release sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere as byproducts of burning fossil fuels. When these gases combine with moisture in the air, they form sulfuric and nitric acids, which fall back to Earth as acid rain. This process can lead to environmental damage, including soil and water acidification, affecting ecosystems and human structures.