Classify each chemical reaction: reaction HI (aq) + NaOH(aq) → Nal (aq) + H₂O(1) Na₂CO₂ (s) → Na₂O(s) + CO₂(g) CuSO₂ (aq) + Zn CrO₂ (aq) → ZnSO4(aq) + CuCrO₂ (s) NaCl(aq) + AgNO, (aq) → NaNO3(aq) + AgCl(s) U type of reaction (check all that apply) combination single replacement Odouble replacement decomposition combination. O single replacement Odouble replacement decomposition combination O single replacement O double replacement O decomposition O combination O single replacement O double replacement O decomposition X precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base Oprecipitation O combustion acid-base S

Q: NBS hv Drawing

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Q: 13. a. b. C. d. e. Which of the following salts is basic? NH4Cl NaCl KC104 CH3NH3C1 KNO₂

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A: The reactant given is 3-methylhex-3-yne.

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Q: CH₂CH3 NCH₂CH₂CH3 CH3CHCH₂CHCH2CH3 CH₂CH3

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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.