Answer
Verified
400.2k+ views
Hint: Lemon reacts with the basic copper oxide and a salt is formed. This salt is removed by washing the copper vessel with water. Thus removing the base and making the vessel to shine.
By using the above information, try to explain why these sour substances are effective in cleaning.
Complete step by step answer:
So, basically copper vessels generally get tarnished (change color) when kept in open. It is due to the formation of a black layer of copper oxide and a green layer of copper carbonate on the copper vessel when it comes in contact with the light and oxygen.
These copper oxide and copper carbonate are basic in nature. Lemon is generally acidic in nature. So it is used to rub the copper vessels. Lemon reacts with the basic copper oxide and copper carbonate to form a salt. This salt is removed by washing the copper vessel with water. Thus removing the base and making the vessel to shine.
Therefore, copper can change color when it encounters carbon dioxide. The tartaric acid contained in tamarind removes the color coat and makes copper get back to its original color.
Note: We can prevent the oxidation of copper by using some kind of grease, such as a layer of Vaseline, over the copper so that we can prevent copper corrosion.
By using the above information, try to explain why these sour substances are effective in cleaning.
Complete step by step answer:
So, basically copper vessels generally get tarnished (change color) when kept in open. It is due to the formation of a black layer of copper oxide and a green layer of copper carbonate on the copper vessel when it comes in contact with the light and oxygen.
These copper oxide and copper carbonate are basic in nature. Lemon is generally acidic in nature. So it is used to rub the copper vessels. Lemon reacts with the basic copper oxide and copper carbonate to form a salt. This salt is removed by washing the copper vessel with water. Thus removing the base and making the vessel to shine.
Therefore, copper can change color when it encounters carbon dioxide. The tartaric acid contained in tamarind removes the color coat and makes copper get back to its original color.
Note: We can prevent the oxidation of copper by using some kind of grease, such as a layer of Vaseline, over the copper so that we can prevent copper corrosion.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE