Question

write balance chemical equations for the following reaction (a)silver bromide on exposure to sunlight decomposes into silver and bromine (b)sodium metal reacts with water to form sodium hydroxide and hydrogen gas

Answer 1

Answer:b) 2NA + 2H20 == 2NAOH + H2

a) 2AgBr == 2AG + Br2

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Explanation:

Answer 2

Answer:

The equations are

a) AgBr ----> Ag + Br

b) 2 Na + 2 H₂O ----> 2 NaOH + H₂

Explanation:

• Silver bromide breaks down into silver metal and bromine vapours when left in sunshine or exposed to sunlight.
• Due to the creation of silver metal, the pale yellow colour of silver bromide changes in this reaction to a greyish white.
• When exposed to light, the light-sensitive chemical silver bromide breaks down.
• The process is referred to as a photolysis reaction. Water and elementary sodium react violently.
• Caustic soda, a sodium hydroxide compound with a high alkalinity, and hydrogen gas combine to generate an odourless solution.
• This reaction is exothermic.
• When heated, sodium metal can catch fire and burn with a distinctive orange flame.
• The hydrogen gas that is generated during combustion reacts violently with the oxygen in the air.

The decomposition of silver bromide is a decomposition reaction, and the reaction of sodium and water is an exothermic reaction.

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