A- B and C are three elements which undergo chemical changes as shown below-A2-O3-2B- B2-O3-2A3CSO4-2B-B2-SO4-3-3C3CO-2A-A2-O3-3CThe most reactive and the least reactive element are respectively-

A_2O_3+2B→ B_2O_3+2A Here B replaced A. ∴ reactivity order B gt;A 3CSO_4+2B→B_2(SO_4)_3+3C Here B replaced C. ∴ reactivity order B gt;C 3CO+2A→A_2 ...

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Byju's Answer

Standard X

Chemistry

Symbols of Elements and Their Valencies

A, B and C ar...

Question

$A, B$ and $C$ are three elements which undergo chemical changes as shown below:
$A_{2} O_{3} + 2 B \to B_{2} O_{3} + 2 A$
$3 C S O_{4} + 2 B \to B_{2} (S O_{4})_{3} + 3 C$
$3 C O + 2 A \to A_{2} O_{3} + 3 C$
The most reactive and the least reactive element are respectively:

A, B

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B, A

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B, C

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C, B

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Solution

The correct option is C $B, C$
$A_{2} O_{3} + 2 B \to B_{2} O_{3} + 2 A$
Here $B$ replaced $A$ .
$∴$ reactivity order $B > A$

$3 C S O_{4} + 2 B \to B_{2} (S O_{4})_{3} + 3 C$
Here $B$ replaced $C$ .
$∴$ reactivity order $B > C$

$3 C O + 2 A \to A_{2} O_{3} + 3 C$
Here $A$ replaced $C$ .
$∴$ reactivity order $A > C$
Hence overall reactivity order is $B > A > C$ .

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Similar questions

A, B

and

C

are three elements which undergo chemical changes as shown below:
(i)

A_{2} O_{3} + 2 B \to B_{2} O_{3} + 2 A

(ii)

3 C S O_{4} + 2 B \to B_{2} (S O_{4})_{3} + 3 C

(iii)

3 C O + 2 A \to A_{2} O_{3} + 3 C

Name the most reactive and the least reactive element.

Q. A,B,C are three elements which undergo chemical change according to following equations-
1. A2O3+2B=A2O3+2A
2.3CSO4+B2[SO4]3+3C
3.3CO+2A=A2O3+3C
Q1.ARRANGE IN THEIR INCREASING ORDER?
Q2.WHICH IS MORE REACTIVE?
Q3.WHICH IS LESS REACTIVE?

Please explain ?

Q. The chemical reaction,

2 O_{3} \to 3 O_{2}

proceeds as follows:

O_{3} ⇌ O_{2} + O

....(fast)

O + O_{3} \to 2 O_{2}

....(slow)

The rate law expression should be:

Q. How many of the following can dissolve in aqueous

H C l

as well as

N a O H

solution to liberate

H_{2}

B, A l, B_{2} H_{6}, B_{2} O_{3}, N a A l H_{4}, {A l}_{2} O_{3}, A l {C l}_{3}, {B F}_{3}

Q. Find the equation of the straight line passing through the pair of points (a, b) and (a + b, a-b).

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A,B and C are three elements which undergo chemical changes as shown below: A2O3+2B→B2O3+2A 3CSO4+2B→B2(SO4)3+3C 3CO+2A→A2O3+3C The most reactive and the least reactive element are respectively:

The correct option is C B,CA2O3+2B→B2O3+2A Here B replaced A. ∴ reactivity order B>A 3CSO4+2B→B2(SO4)3+3C Here B replaced C. ∴ reactivity order B>C 3CO+2A→A2O3+3C Here A replaced C. ∴ reactivity order A>C Hence overall reactivity order is B>A>C.

$A, B$ and $C$ are three elements which undergo chemical changes as shown below:
$A_{2} O_{3} + 2 B \to B_{2} O_{3} + 2 A$
$3 C S O_{4} + 2 B \to B_{2} (S O_{4})_{3} + 3 C$
$3 C O + 2 A \to A_{2} O_{3} + 3 C$
The most reactive and the least reactive element are respectively: