Chemistry, 18.03.2021 01:40 quintencoffman2
Alex cooled a gas from 50.0ºC to 25.0ºC at constant volume. Which of the following decreased?
I. The molar mass of the gas
II. The distance between the molecules
III. The speed of the molecules
I only
I only
II only
II only
III only
III only
I and III
Answers: 1
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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 .
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Alex cooled a gas from 50.0ºC to 25.0ºC at constant volume. Which of the following decreased?
I. Th...
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