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The actual reaction is:
Pb(s) + 4HNO3(aq) -----> Pb(NO3)2(aq) + 2H2O(l) + 2NO2(g)
This is interesting for a number of reasons. Since the activity of lead is less than H2, (The Eo for the reduction of Pb2+ to the metal is -0.125 V, compared to the minimum -0.6 V or less that is required) the reaction cannot occur as a single replacement, e.g.
Pb(s) + 2HNO3(aq) -----> Pb(NO3)2(aq) + H2(g) does not occur. There are really two reactions at work.
1.) HNO3 oxidizes Pb to form PbO:
Pb(s) + 2HNO3(aq) -----> PbO(s) + H2O(l) + 2NO2(g)
Lead is oxidized from 0 to +2 and two moles of N are reduced from +5 to +4. This is a redox reaction.
2.) HNO3 then reacts with PbO and to form Pb(NO3)2:
PbO(s) + 2HNO3(aq) -----> Pb(NO3)2(aq) + H2O(l)
This is a double replacement reaction. This sequence of events is seen (albeit with a change in stoichiometry) for other some other metals as well, most notably copper and silver.
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Phenol when it first reacts with conc sulfuric acid and then with conc nitric acid gives?
Phenol reacts with concentrated sulfuric acid to form the sulfonated product, and then with concentrated nitric acid to form picric acid (2,4,6-trinitrophenol).
Why Should phenylalanine give a yellow Color with concentrated nitric acid?
Phenylalanine gives a yellow color with concentrated nitric acid due to the formation of a nitro derivative. Nitric acid reacts with the aromatic ring of phenylalanine, leading to the formation of a yellow compound.
How does aluminum metal react with nitric acid?
When aluminum metal reacts with nitric acid, it produces aluminum nitrate, nitrogen dioxide gas, and water. This reaction is exothermic and can be violent if concentrated nitric acid is used.
Does iron reacts with concentrated nitric acid?
iron with concentrated nitric acid no reaction occurs becase of the iron passivity which is due to the oxidizing property of the acid were a layer of the metal oxide is formed which is complete and non porous so it protects the metal from further reaction
What happens when phenol reacts with concentrated HNO3 plus H2SO4?
When phenol reacts with concentrated nitric acid (HNO3) in the presence of sulfuric acid (H2SO4), a mixture of products is formed, including picric acid (2,4,6-trinitrophenol) and water. This reaction is known as nitration of phenol and is used to synthesize picric acid, which is a yellow, explosive compound.
Phenol when it first reacts with conc sulfuric acid and then with conc nitric acid gives?
Phenol reacts with concentrated sulfuric acid to form the sulfonated product, and then with concentrated nitric acid to form picric acid (2,4,6-trinitrophenol).
Why Should phenylalanine give a yellow Color with concentrated nitric acid?
Phenylalanine gives a yellow color with concentrated nitric acid due to the formation of a nitro derivative. Nitric acid reacts with the aromatic ring of phenylalanine, leading to the formation of a yellow compound.
Nitric acid reacts with nitric acid?
No, it does not
How does aluminum metal react with nitric acid?
When aluminum metal reacts with nitric acid, it produces aluminum nitrate, nitrogen dioxide gas, and water. This reaction is exothermic and can be violent if concentrated nitric acid is used.
What happens when aluminium sulphate reacts with nitric acid?
Answer plc urgent
Does iron reacts with concentrated nitric acid?
iron with concentrated nitric acid no reaction occurs becase of the iron passivity which is due to the oxidizing property of the acid were a layer of the metal oxide is formed which is complete and non porous so it protects the metal from further reaction
What happens when phenol reacts with concentrated HNO3 plus H2SO4?
When phenol reacts with concentrated nitric acid (HNO3) in the presence of sulfuric acid (H2SO4), a mixture of products is formed, including picric acid (2,4,6-trinitrophenol) and water. This reaction is known as nitration of phenol and is used to synthesize picric acid, which is a yellow, explosive compound.
What is the reaction of iron with dilute nitric acid concentrated nitric acid and very dilute nitric acid?
1-diluted : Fe+4HNo3ـــــــــــــــdilu. + heatــــــــــــ Fe(No3)3+2H2o+No 2-with concentrated no reaction occurs becase of the iron passivity which is due to the oxidizing property of the acid were a layer of the metal oxide is formed which is complete and non porous so it protects the metal from further reaction
Effects of concentrated nitric acid on water samples containing mercury?
Mercury (as a metal) is soluble in concentrated nitric acid.
How does concentrated nitric acid affects water samples containing mercury?
Mercury (as a metal) is soluble in concentrated nitric acid.
What happens when aluminium reacts with nitric acid?
Aluminium reacts with dilute nitric acid to give aluminium nitrate and hydrogen gas. aluminium + nitric acid -> aluminium nitrate + hydrogen 2Al(s) + 6HNO3 (aq) -> 2Al(NO3)3 (aq) + 3H2(g)
Carbon react with dilute hydrochloric acid?
Carbon don't react with acids, except concentrated Nitric acid. Concentrated nitric acid reacts with carbon to produce Water, Carbon dioxide, and Nitrogen dioxide.
