16. Write the balanced chemical equation to represent the following statements:
(i) Carbon (coke) burns in air to form carbondioxide.
(ii) A piece of sodium metal on putting in water forms caustic soda(NaOH) and hydrogen gas
(iii) Methane burns in oxygen to form carbondioxide and water
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Answer:
1) 2C+O2=CO2
2) 2Na+2H2O=2NaOH+H2
3) 2CH3+4O2=2CO2+3H2O
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