Limestone rock is primarily calcium carbonate. This rock is particularly vulnerable to acid attack, reacting with hydrochloric acid to form calcium chloride, carbon dioxide gas, and water. For this reason, some fracking operations use a mixture of acids to open up the pores in limestone bedrock to improve natural gas extraction. If a 25.0g sample of limestone reacts with excess HCl, what volume (L) of carbon dioxide gas is formed at 752 mm Hg and 24LaTeX: ^\circ∘C.

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .