There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. CaC, (s) +2 H,0 (1) C,H, (g) +Ca(OH), (s) K1 6C,H, (g) + 3 CO, (g) +4 H,O (1) =5 CH,CHCO,H (g) K2 The net reaction is: 6 CaC, (s) + 16 H,O (I) +3 CO, (g) = 6 Cа(ОН), (s) K +5 CH,CHCO,H (g) Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![### Industrial Preparation of Acrylic Acid
Acrylic acid, an important precursor for several kinds of useful plastics, is typically produced industrially through a series of reactions. Below is a detailed explanation of the two key steps involved in this preparation.
#### Step 1
\[
\text{CaC}_2 (\text{s}) + 2\text{H}_2\text{O} (\ell) \rightleftharpoons \text{C}_2\text{H}_2 (\text{g}) + \text{Ca}(\text{OH})_2 (\text{s}) \quad K_1
\]
In the first step, calcium carbide (\(\text{CaC}_2\)) reacts with water (\(\text{H}_2\text{O}\)) to form acetylene (\(\text{C}_2\text{H}_2\)) and calcium hydroxide (\(\text{Ca}(\text{OH})_2\)). This reaction has an equilibrium constant \(K_1\).
#### Step 2
\[
6 \text{C}_2\text{H}_2 (\text{g}) + 3 \text{CO}_2 (\text{g}) + 4 \text{H}_2\text{O} (\ell) \rightleftharpoons 5 \text{CH}_2\text{CHCO}_2\text{H} (\text{g}) \quad K_2
\]
In the second step, acetylene (\(\text{C}_2\text{H}_2\)) reacts with carbon dioxide (\(\text{CO}_2\)) and water (\(\text{H}_2\text{O}\)) to produce acrylic acid (\(\text{CH}_2\text{CHCO}_2\text{H}\)). This step is associated with an equilibrium constant \(K_2\).
#### Net Reaction
Combining the two steps, the net reaction is:
\[
6 \text{CaC}_2 (\text{s}) + 16 \text{H}_2\text{O} (\ell) + 3 \text{CO}_2 (\text{g}) \rightleftharpoons 6 \text{Ca}(\text{OH})_2 (\text{s}) + 5 \text{CH}_2\text{CHCO}_2\text{H](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc263c232-c8ba-454e-afea-7365060a5f64%2Fd161423e-69a0-43e8-a603-44a24b2adf2b%2F60wtgfm_processed.png&w=3840&q=75)
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