differentiate between concentrated nitric acid and dilute nitric acid by a single chemical test
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Answer: by pH
Explanation:
The solution having pH range between 1 to 3.5 will be concentrated while the remaining range till 7 will be dilute acid. Concentrated acid can be diluted by adding water to it.
sulfer react Just with conc nitric asd
S + 6 HNO3(conc) = H2SO4 + 2 H2O + 6 NO2
S + HNO3 (dil) = No Reaction
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