Q.4 Write balanced equations by predicting the products of the following reactions. Include the physical state of each element or compound. a) Phosphorus burn in chlorine to form phosphorus pentachloride. b) A single- displacement reaction of calcium metal with a nitric acid solution c) Burning of natural gas. d) The process of respiration. e) When a green iron salt is heated strongly, its colour finally changes to black and odour of burning sulphur is given out.
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(i) P4 (s) + 10Cl2 (g) ———> 4PCl5 (S)
(i)CH4 (g) + 2O2 (g) ———> CO2 (g) + 2H2O(l) + heat energy
(iii) C6H12O6 (s) + 6O2 (g) + 6H2O
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