Question

What is the source of energy for the following decomposition reactions:- (a) Decomposition of potassium chlorate to potassium chloride and

oxygen

(b)Electrolysis of brine solution to get hydrogen, chlorine and caustic

soda.

(c) Depletion of ozone in stratosphere due to chlorofluorocarbons.
please help me with this question​

Answer 1

Answer:

Answer. Answer:reactions involving decomposition do require the input of external energy. This energy can be in the form of heat, radiation, electricity, or light. hope it will be helpful to you sister

Answer 2

Source of energy:

Explanation:

(a)

• The decomposition reaction of the potassium chlorate compound breaks to form potassium chloride and oxygen.
• This reaction requires heat as a source of energy to break down the compound.
• This heat is external heat provided as a source.

(b)

• Brine is a mixture of sodium chloride (NaCl) and water (H2O). The electrolysis involves using an electric current to bring about a chemical change and make new chemicals.
• The electrolysis of brine is a large-scale process used to produce chlorine from salt.
• Two other useful chemicals are obtained during the process, sodium hydroxide (NaOH) and hydrogen (H2).
• The source of heat for the electrolysis of brine is an electric current.

(c)

• When chlorine and bromine gases come into contact with ozone in the stratosphere, they destroy ozone molecules.
• Some compounds release chlorine or bromine gases when they are exposed to intense UV light in the stratosphere.
• These compounds share a major part in ozone depletion and are called ozone-depleting substances. The source of heat in the ozone depletion is UV light i.e. radiations.