Identify each of the following unbalanced reactions as a redox-reaction or a non-redox reaction. Identification Reaction CH₁206(S) - CO₂(g) + C₂H₂OH(1) SO₂(g) + H₂O(1) - H₂SO₂(aq) NaOH(aq) + Al(s) + H₂O(1) − H₂(9) + NaAlO₂(s) 2NaOH(aq) + Cl₂(9) - NaCl(aq) + H₂O(1) + NaClO(aq) Na₂CO3(aq) + 2HCl(aq) → 2NaCl(aq) + H₂O(l) + CO₂(g) C6H1206(s) + 60₂(g) - 6CO₂(g) + 6H₂O(1) Fe3O4(s) + CO(g) - 3FeO(s) + CO₂(g) 2Fe(OH)3(s) - Fe₂O3(s) + 3H₂O(l)
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.
![Identify each of the following unbalanced reactions as a redox-reaction or a non-redox reaction.
Identification
O
•
•
Reaction
C6H12O6(S) CO₂(g) + C₂H₂OH(1)
SO₂(g) + H₂O(l) - H₂SO3(aq)
NaOH(aq) + Al(s) + H₂O(l) → H₂(g) + NaAlO₂(s)
2NaOH(aq) + Cl₂(9) - NaCl(aq) + H₂O(l) + NaClO(aq)
Na₂CO3(aq) + 2HCl(aq) → 2NaCl(aq) + H₂O(1) + CO₂(9)
C6H1206(S) + 602(g) → 6CO2(g) + 6H₂O(l)
Fe3O4(s) + CO(g) - 3FeO(s) + CO₂(g)
2Fe(OH)3(S) - Fe₂O3(s) + 3H₂O(l)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4bd8219-081a-412d-9c25-dd7d61b368ec%2F3a47d8df-1e84-440e-86ec-946ece66ba03%2Fu18gu7i_processed.png&w=3840&q=75)
![Use the following information to answer the next question.
CO₂(g) + 2H+ (aq) + Ze" - HCOOH (1) E° = -0.20V
Which of the following substances oxidizes HCOOH(I)?
Select one:
O Pb²+ (aq)
O Pb(s)
O Zn²+ (aq)
O Zn(s)
Use the following information to answer the next question.
Entities that contain Cl
1. HCI
2. CIO₂
3. Cl₂
4. KCIO4
When the above entities are placed in order from the substance in which chlorine has the highest oxidation number to the substance in which chlorine has the lowest oxidation number, the order is
Use the following information to answer the next question.
The energy from an alkaline battery is generated by the following equation.
Zn(s) + 2 MnO₂ (s) ZnO(s) + Mn₂O3(s)
-
During the operation of the alkaline battery, which of the following observations can be made?
Select one:
O The amount of MnO₂ (s) increases as Zn(s) is reduced.
O The amount of MnO₂ (s) decreases as Zn(s) is oxidized.
O The amount of Zn(s) decreases as MnO₂ (s) is oxidized.
O The amount of Zn(s) increases as MnO₂ (s) is reduced.
•
。
•](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4bd8219-081a-412d-9c25-dd7d61b368ec%2F3a47d8df-1e84-440e-86ec-946ece66ba03%2Fn41r4cd_processed.png&w=3840&q=75)
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