give an example of chemical reaction characterised by evolution of gas
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) Evolution of gas--- Reaction between zinc and dilute sulphuric acid
ii) Change in color--- Reaction between citric acid and purple colored potassium permanganate solution gives colourless solution.
iii) Formation of precipitate--- Reaction between potassium iodide and lead nitrate forms a yellow precipitate of lead iodide.
iv) Change in temperature: Reaction between zinc granules and dliute hydrochloric acid.
v) Change in state: Combustion of candle wax is characterized by a change in state from solid to liquid and gas.
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ii) Change in color--- Reaction between citric acid and purple colored potassium permanganate solution gives colourless solution.
iii) Formation of precipitate--- Reaction between potassium iodide and lead nitrate forms a yellow precipitate of lead iodide.
iv) Change in temperature: Reaction between zinc granules and dliute hydrochloric acid.
v) Change in state: Combustion of candle wax is characterized by a change in state from solid to liquid and gas.
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