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Iron forms a protective oxide layer on its surface when exposed to air, which prevents further reaction with concentrated nitric acid. The oxide layer acts as a barrier, preventing the acid from coming into contact with the underlying iron metal, thereby making iron passive towards concentrated nitric acid.
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Why does the action of concentrated nitric acid render aluminum passive?
nitric acid is light sensitve , it decomposes when expose in light. when aluminium is added to the conc HNO3 it remain passive in conc nitric acid,...... and moreover aluminium oxide layer is also form due to which it remain passive in conc nitric acid...
Is nitric acid a dilute acid?
Nitric acid can be dilute or concentrated. This is simply a matter of how much of it you have in a given amount of a solution, which is variable.
What is the colour of concentrated nitric acid?
The nitric acid used in laboratory is colorless. The very concentated nitric acid - the fumans acid - with dissolved nitrogen oxides, can release white, red or brown fumes, very corrosive and toxic.
Comparison between dilute solution of nitric acid and a concentrated nitric acid?
A dilute solution of nitric acid has a lower concentration of nitric acid molecules compared to a concentrated solution. This leads to the dilute solution having a lower acidic strength and being less corrosive. Concentrated nitric acid, on the other hand, has a higher concentration of nitric acid molecules, making it more acidic and corrosive.
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 does the action of concentrated nitric acid render aluminum passive?
nitric acid is light sensitve , it decomposes when expose in light. when aluminium is added to the conc HNO3 it remain passive in conc nitric acid,...... and moreover aluminium oxide layer is also form due to which it remain passive in conc nitric acid...
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 is a chemical reagent of NaCl?
concentrated nitric acid concentrated sulphuric acid
Is nitric acid a dilute acid?
Nitric acid can be dilute or concentrated. This is simply a matter of how much of it you have in a given amount of a solution, which is variable.
What is the colour of concentrated nitric acid?
The nitric acid used in laboratory is colorless. The very concentated nitric acid - the fumans acid - with dissolved nitrogen oxides, can release white, red or brown fumes, very corrosive and toxic.
Comparison between dilute solution of nitric acid and a concentrated nitric acid?
A dilute solution of nitric acid has a lower concentration of nitric acid molecules compared to a concentrated solution. This leads to the dilute solution having a lower acidic strength and being less corrosive. Concentrated nitric acid, on the other hand, has a higher concentration of nitric acid molecules, making it more acidic and corrosive.
When concentrated nitric acid is heated with sulfur whih acid is obtained?
Sulphuric acid
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).
Can concentrated nitric acid be stored in an aluminium vessel?
It is not recommended to store concentrated nitric acid in an aluminum vessel as nitric acid can react with aluminum, forming aluminum nitrate and liberating hydrogen gas, which can be hazardous. It is best to store nitric acid in containers made of compatible materials, such as glass or certain types of plastics.
What is the grade of nitric acid in aqua regia?
It has to be very concentrated.
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.
