Question

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Answer 1

Answer:

1)Gain of oxygen and electronegative elements

and reduction of Hydrogen and electropositive elements is called oxidation.It is exothermic reaction.

2)a) 2KOH+CO2=K2CO3+H2O

b)CH4+2O2=CO2+H20

Answer 2

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1) Oxidation reaction is an exothermic reaction as heat is released during this reaction (as seen above). In the above reaction, copper oxide is reduced to copper whereas hydrogen is oxidised to water. Such a reaction is known as the Redox reaction.

2) 2KOH+CO2-K2CO3+H2O

b) CH4+2O2-CO2+2H2O

3)Given parameters

Current (I) = 0.5 A

Time = 10 minutes

Time in minutes can be converted into seconds as follows

Time (t) = 10 × 60 = 600 sec

Q = I × t

Q = 0.5 × 600

Q = 300 C