support with example that compound formation takes place with energy changes using water formation and iron sulphide
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The chemical reaction for water formation to show energy exchange we use the formula :
The burning of methane gas (CH⁴) in plain air or in presence of oxygen we get:
(CH⁴) + O² = CO² + H²O
As methane burns in air it forms carbon dioxide and water
The chemil reaction for sulphide formation to show energy exchange we use the formula :
Sulphide is usually attached with sodium or Hydrogen the formation or the chemical reaction for the sulphide is :
NaHs + NaOH = Na2s + H2O
The formation of sodium sulphide is formed by sodium hydrosulpher and sodium hydroxide. Boiling off the sodium sulphide we get the conjugate sulphide
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