assify each chemical reaction: Na₂CO3(s) → Na₂O(s) + CO₂(g) H Br(aq) + NaOH(aq) reaction → Na Br (aq) + H₂O (1) 2CH₂CH₂CO₂H (1) + 70₂(g) → 6CO₂(g) + 6H₂O(g) CH₂(g) + 20₂(g) → CO₂(g) + 2H₂O(g) type of reaction (check all that apply) combination O single replacement double replacement O decomposition O combination O single replacement O double replacement O decomposition O combination O single replacement double replacement O decomposition O combination O single replacement double replacement decomposition O precipitation O combustion O acid-base O precipitation O combustion O acid-base O precipitation O combustion O acid-base O precipitation O combustion O acid-base
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.
![**Classify Each Chemical Reaction**
The table below lists several chemical reactions. For each reaction, check all applicable reaction types.
| **Reaction** | **Type of Reaction (check all that apply)** |
|--------------|---------------------------------------------|
| Na₂CO₃(s) → Na₂O(s) + CO₂(g) | □ combination □ single replacement □ double replacement ■ decomposition □ precipitation □ combustion □ acid-base |
| HBr(aq) + NaOH(aq) → NaBr(aq) + H₂O(l) | □ combination □ single replacement □ double replacement □ decomposition □ precipitation □ combustion ■ acid-base |
| 2C₃H₆O₂(l) + 7O₂(g) → 6CO₂(g) + 6H₂O(g) | □ combination □ single replacement □ double replacement □ decomposition □ precipitation ■ combustion □ acid-base |
| CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g) | □ combination □ single replacement □ double replacement □ decomposition □ precipitation ■ combustion □ acid-base |
**Explanation of Diagram:**
The table presents four chemical reactions with corresponding checkboxes for various types of reactions. Students are tasked with identifying whether each reaction falls under the categories of combination, single replacement, double replacement, decomposition, precipitation, combustion, or acid-base. The correct selections reflect common classifications of basic chemical reactions.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9e783f66-b34a-45d9-ad0a-1bd44c44ca06%2Fe0f24c74-9670-468f-a1cf-2cff5860db3c%2F3xrgsmr_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
a) Precipitation reaction:
In precipitation reaction an insoluble salt is formed by the reaction between 2 aqueous solution containing soluble salts.
b) Double displacement reaction
In double displacement reaction the cation and anion of the two compound switch places. In this reaction 2 Compound (reactants) exchange of ions to form 2 new compounds (products).
c) Single displacement reaction:
Single displacement reaction occurs when one of the element displaces the another element from its compound.
d) Redox reaction:
In redox reactions oxidation and reduction occurs simultaneously.
e) Neutralization reaction:
Neutralization reaction also known as acid base reaction. As in this reaction acid and base neutralizes to produce salt and water.
f) Decomposition reaction:
Decomposition reaction occurs when large or complex compound break down into simpler compounds or elements.
g) Combustion reaction:
Combustion reaction is a reaction in which the Hydrocarbons react with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O).
h) Combination reaction :
Combination reaction is a reaction in which 2 or more reactant combine to form a single product.
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