Answer
424.2k+ views
Hint: The metal X is a hydride of the element with an atomic number of 13 which it forms a white coloured precipitate (insoluble solid which settles at the bottom of the solution). The hydride of this element is also amphoteric because it can react with both acid and base.
Complete step by step answer:
- It is given that the metal X reacts with sodium hydroxide to give a white precipitate. From all the metal, aluminium is the metal which reacts with sodium hydroxide to give white aluminium hydroxide.
The reaction will be:
$\text{2Al + 3NaOH }\to \text{ Al(OH}{{\text{)}}_{3}}\downarrow \text{ + 3N}{{\text{a}}^{+}}$
- So, the element X is aluminium and A is aluminium hydroxide.
- But when this precipitate reacts with an excess of sodium hydroxide, it forms a complex which is soluble in the solution.
- The complex is sodium tetra hydroxy aluminate (III). The reaction is:
$\text{Al(OH}{{\text{)}}_{3}}\text{ + NaOH }\to \text{ N}{{\text{a}}^{+}}{{\left( \text{Al(OH}{{\text{)}}_{4}} \right)}^{-}}$
- So, complex B is Sodium tetra hydroxy aluminate.
- As we know that aluminium is an amphoteric so when it will react with the hydrochloric acid then it will yield aluminium chloride along with the water i.e.
$\text{Al(OH}{{\text{)}}_{3}}\text{ + 3HCl }\to \text{ AlC}{{\text{l}}_{3}}\text{ + 3}{{\text{H}}_{2}}\text{O}$
- So, compound C is aluminium chloride.
- Now, when the compound A i.e. aluminium hydroxide is heated it undergoes decomposition reaction and yields alumina (D) along with water.
$2\text{Al(OH}{{\text{)}}_{3}}\text{ }\to \text{ A}{{\text{l}}_{2}}{{\text{O}}_{3}}\text{ + 3}{{\text{H}}_{2}}\text{O}$
- From alumina, pure aluminium metal can be extracted.
Therefore, compound A, B, C, D and X are aluminium oxide, Sodium tetra hydroxo aluminate, aluminium chloride, alumina and aluminium respectively.
Note: Aluminium can be extracted from alumina with the help of electrolysis. But as alumina is a poor conductor of heat and electricity so some amount of cryolite and fluorspar is added to overcome the problem.
Complete step by step answer:
- It is given that the metal X reacts with sodium hydroxide to give a white precipitate. From all the metal, aluminium is the metal which reacts with sodium hydroxide to give white aluminium hydroxide.
The reaction will be:
$\text{2Al + 3NaOH }\to \text{ Al(OH}{{\text{)}}_{3}}\downarrow \text{ + 3N}{{\text{a}}^{+}}$
- So, the element X is aluminium and A is aluminium hydroxide.
- But when this precipitate reacts with an excess of sodium hydroxide, it forms a complex which is soluble in the solution.
- The complex is sodium tetra hydroxy aluminate (III). The reaction is:
$\text{Al(OH}{{\text{)}}_{3}}\text{ + NaOH }\to \text{ N}{{\text{a}}^{+}}{{\left( \text{Al(OH}{{\text{)}}_{4}} \right)}^{-}}$
- So, complex B is Sodium tetra hydroxy aluminate.
- As we know that aluminium is an amphoteric so when it will react with the hydrochloric acid then it will yield aluminium chloride along with the water i.e.
$\text{Al(OH}{{\text{)}}_{3}}\text{ + 3HCl }\to \text{ AlC}{{\text{l}}_{3}}\text{ + 3}{{\text{H}}_{2}}\text{O}$
- So, compound C is aluminium chloride.
- Now, when the compound A i.e. aluminium hydroxide is heated it undergoes decomposition reaction and yields alumina (D) along with water.
$2\text{Al(OH}{{\text{)}}_{3}}\text{ }\to \text{ A}{{\text{l}}_{2}}{{\text{O}}_{3}}\text{ + 3}{{\text{H}}_{2}}\text{O}$
- From alumina, pure aluminium metal can be extracted.
Therefore, compound A, B, C, D and X are aluminium oxide, Sodium tetra hydroxo aluminate, aluminium chloride, alumina and aluminium respectively.
Note: Aluminium can be extracted from alumina with the help of electrolysis. But as alumina is a poor conductor of heat and electricity so some amount of cryolite and fluorspar is added to overcome the problem.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)