Answer
Verified
402.6k+ views
Hint: Try to recall that washing soda is a white crystalline solid which exists as decahydrate and on heating, the decahydrate loses the water of crystallisation and changes to a white powder called soda ash. Now by using this you can easily find the correct option from the given options.
Complete step by step solution:
-It is known to you that washing soda is a white crystalline solid which exists as a decahydrate and is readily soluble in water.
-It reacts with dilute mineral acids evolving carbon dioxide.
-Also, it gets hydrolysed by water to form an alkaline solution.
-On strong heating, it loses all its water of crystallisation and becomes completely anhydrous and changes to white powder called soda ash.
-Now, since it is known to you that \[N{a_2}C{O_3}\] is soda ash. So, you can easily say that \[N{a_2}C{O_3}.10{H_2}O\] is the chemical formula of washing as it is the hydrated form of soda ash.
Therefore, from above we can say that option B is the correct option for the given question.
Additional information:
The important uses of washing powder are as follows:
-It is used for softening of hard water.
-It is used for washing purposes in laundry.
-Also, it is used as a reagent in the laboratory.
-It is used for the manufacture of soap, glass, paper, borax, caustic soda etc.
-It is used for metal refining.
Note: -It should be remembered that sodium carbonate is generally prepared commercially by Solvay process or ammonia soda process.
-Also, you should remember that washing soda is also used in the textile and petroleum industry.
Complete step by step solution:
-It is known to you that washing soda is a white crystalline solid which exists as a decahydrate and is readily soluble in water.
-It reacts with dilute mineral acids evolving carbon dioxide.
-Also, it gets hydrolysed by water to form an alkaline solution.
-On strong heating, it loses all its water of crystallisation and becomes completely anhydrous and changes to white powder called soda ash.
-Now, since it is known to you that \[N{a_2}C{O_3}\] is soda ash. So, you can easily say that \[N{a_2}C{O_3}.10{H_2}O\] is the chemical formula of washing as it is the hydrated form of soda ash.
Therefore, from above we can say that option B is the correct option for the given question.
Additional information:
The important uses of washing powder are as follows:
-It is used for softening of hard water.
-It is used for washing purposes in laundry.
-Also, it is used as a reagent in the laboratory.
-It is used for the manufacture of soap, glass, paper, borax, caustic soda etc.
-It is used for metal refining.
Note: -It should be remembered that sodium carbonate is generally prepared commercially by Solvay process or ammonia soda process.
-Also, you should remember that washing soda is also used in the textile and petroleum industry.
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
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE