`F` is.

A

Cathode

B

Anode

C

Electrolyte

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`underset((A))(Al_(2)O_(3).2H_(2)O) + 2NaOH + H_(2) O rarr underset("Sodium aluminate (B)")(2Na[Al(OH)_(4)])`
`2Na[Al(OH)_(4)] + underset((C))(2CO_(2)) rarr underset("Pure")(Al_(2)O_(3)).2H_(2)O + 2NaHCO_(3) + H_(2) O`
`Al_(2).O_(3). 2H_(2) O` is mixed with cryolite, `Na_(3) AlF_(6) (E)` to reduce the melting point of the mixture and increases conductivity. On electrolysis. `Al` is deposited at cathode `(F)`
At cathode : `At^(3+) + 3e^(Ө) rarr Al`
Al anode : `C + O^(2-) rarr CP + 2e^(Ө)`
`C + 2O^(2-) rarr CO_(2) + 4e^(Ө)`.
Hence,
`F` is cathode.
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exercise (Multiple Correct)|43 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exercise (Single Correcttype)|106 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exs 1.1 (True Orfalse Statement)|19 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Subjective|35 Videos

  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Linked Comprehension)|1 Videos

Similar Questions

Explore conceptually related problems

If f(0) = 0 , f' ( 0 ) = 2 and y = f ( f ( f ( f ( x ) ) ) ) , then y'( 0 ) is equal to

If f(x)=a+b x+c x^2 and alpha,beta,gamma are the roots of the equation x^3=1,t h e n|a b c b c a c a b| is equal to a. f(alpha)+f(beta)+f(gamma) b f(alpha)f(beta)+f(beta)f(gamma)+f(gamma)f(alpha) c. f(alpha)f(beta)f(gamma) d. -f(alpha)f(beta)f(gamma)

If the function f :N to N is defined by f (x)= sqrtx, then (f (25))/(f (16)+ f(1)) is equal to

If f(1) = 1, f'(1) = 3, then the derivative of f(f(x))) + (f(x))^(2) at x = 1 is

If f (x) is a polynomial of degree two and f(0) =4 f'(0) =3,f'' (0) 4 then f(-1) =

If f (x) is polynomial of degree two and f(0) =4 f'(0) =3,f''(0) =4,then f(-1) =

If f(-x)=-f(x) , then f(x) is

If f(x)=2x+1 then the value of x satisfying the equation f(x)+f(f(x))+f(f(f(x)))+f(f(f(f(x)))=116 is equal to