Aluminium reacts with diluted HNO₃ but not with concentrated HNO₃ - Explain.
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Although aluminium reacts with dilutenitric acid to produce aluminiumnitrate and hydrogen gas,concentrated (>60%) nitric acid is such a powerful oxidising agent that it instantly causes a thin layer ofaluminium oxide to coat the surface of the aluminium. ... It'll react only when nitric is very dilute .
It mainly depends upon the concentration of the HNO3 used.
We know that concentrated nitric acid is a strong oxidizing agent.
When the density of nitric acid is greater than 60%(approx) it helps Aluminium to oxidise than to react with it to form aluminium nitrate.
So when the layer of Al2O3 covers the aluminium container then acid cannot come contact with the acid and thus reaction is stopped.
Hope it helps...
Thank you..
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It mainly depends upon the concentration of the HNO3 used.
We know that concentrated nitric acid is a strong oxidizing agent.
When the density of nitric acid is greater than 60%(approx) it helps Aluminium to oxidise than to react with it to form aluminium nitrate.
So when the layer of Al2O3 covers the aluminium container then acid cannot come contact with the acid and thus reaction is stopped.
Hope it helps...
Thank you..
PLS MARK MY ANSWER AS BRAINLIEST ANSWER
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