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state how would you obtain (i) hydrogen (ii) nitric acid (iii)nascent chlorine from nitirc acid. state the concentration of nitric acid used in each case.

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Solution

H₂ from HNO₃can be obtained as follows:
Mg + HNO_3(dil)------> Mg(NO₃)₂+ H₂
HNO_3(conc.) + 3HC1 -----> NOC1 + 2H₂O + 2[C1]

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