Question 45 of 50 Determine the mass in grams of CO: that are produced by the complete reaction of 10.49 grams of CaHuz (cyclohexane) according to the following combustion reaction: CHz(D)+ 9 [O:(g)– 6 [CO:(g)+ 6 HO(g)
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.
![**Combustion Reaction Calculation Example**
**Question 45 of 50**
**Goal:**
Determine the mass in grams of CO₂ produced by the complete reaction of 10.49 grams of C₆H₁₂ (cyclohexane) according to the combustion reaction:
\[ \text{C}_6\text{H}_{12(l)} + 9\text{O}_{2(g)} \rightarrow 6\text{CO}_{2(g)} + 6\text{H}_2\text{O}_{(g)} \]
**Calculation Steps:**
1. **Starting Amount:**
\[ 10.49 \, \text{g of C}_6\text{H}_{12} \]
2. **Conversion Factors:**
- Molar mass of CO₂: 32.91 g/mol
- Molar mass of C₆H₁₂: 84.16 g/mol
- Other key numbers involved:
- 0.1246
- 5.486
- 18.02
- 32.00
- Avogadro's number: \( 6.022 \times 10^{23} \)
3. **Conversion Path:**
- Convert grams of C₆H₁₂ to moles of CO₂.
4. **Units:**
- g CO₂
- mol CO₂
- g O₂
- g H₂O
- mol O₂
- g C₆H₁₂
- mol C₆H₁₂
**Input Fields:**
- Starting amount and conversion are adjusted through input boxes.
- A reset button to clear inputs.
This example helps illustrate the steps involved in a stoichiometric calculation for a combustion reaction. The process involves identifying given quantities, determining molar ratios from the balanced equation, and using conversion factors to find the desired mass of CO₂.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0406c5f8-494f-428b-ae59-e78691671853%2Ff5ca46c7-649e-4f61-85f4-b96641ff8227%2Fbo8phxd_processed.jpeg&w=3840&q=75)
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