Question

• Classify the following reactions and tabulate them.
The burning of candle.
.
Glow of a fire fly.
Electroplating of gold on a copper bangle.
Potassiam permanganate is heated.
Photosynthesis
Chemical reactions taking place in cells.
Thermochemical
reaction
Photochemical
reaction
Electrochemical
reaction​

Answer 1

Answer:

1. thermochemical

2. photochemical

3. electrochemical

4. thermochemical

5. photochemical

6.electrochemical

reactions

1.thermochemical reaction—— (−110.5 kJ) + (−283.0 kJ) = (−393.5 kJ) = ΔH of Reaction (1) EXAMPLE OF THERMOCHEMICAL EQUATION IS When methane gas is combusted, heat is released, making the reaction exothermic. ... In the process, 890.4 kJ is released and so it is written as a product of the reaction.

2.photochemical reaction—— A photochemical reaction is a chemical reaction triggered when light energy is absorbed by a substance's molecules. This response leads the molecules to experience a temporary excited state, thus altering their physical and chemical properties from the substance's initial molecule.

3.electrochemical reaction —— Electrochemical reaction, any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances—one a solid and the other a liquid.