If HNO3 changes into N2O , the change in oxidation number is:

Question

If HNO3 changes into N2O , the change in oxidation number is: (A) zero (B) 4 (C) 2 (D) 6

Tardigrade Admin · Accepted Answer

The sum of oxidation state of all elements in compound is zero. Let oxidation state of N=x HNO 3 N 2 O +1+x+(-2 × 3)=0 2 x+(-2)=0 ∴ x=+5 ∴ x=+1 ∴ Change in oxidation state =(+5)-(+1)=+4

Q. If $H N O_{3}$ changes into $N_{2} O$ , the change in oxidation number is:

zero

4

2

6

The sum of oxidation state of all elements in compound is zero.
Let oxidation state of $N = x$
$H N O_{3} N_{2} O + 1 + x + (- 2 \times 3) = 0$
$2 x + (- 2) = 0$
$∴ x = + 5$
$∴ x = + 1$
$∴$ Change in oxidation state
$= (+ 5) - (+ 1) = + 4$

Q. If HNO3​ changes into N2​O , the change in oxidation number is:

zero

4

2

6

The sum of oxidation state of all elements in compound is zero. Let oxidation state of N=x HNO3​N2​O+1+x+(−2×3)=0 2x+(−2)=0 ∴x=+5 ∴x=+1 ∴ Change in oxidation state =(+5)−(+1)=+4

Q. If $H N O_{3}$ changes into $N_{2} O$ , the change in oxidation number is:

The sum of oxidation state of all elements in compound is zero.
Let oxidation state of $N = x$
$H N O_{3} N_{2} O + 1 + x + (- 2 \times 3) = 0$
$2 x + (- 2) = 0$
$∴ x = + 5$
$∴ x = + 1$
$∴$ Change in oxidation state
$= (+ 5) - (+ 1) = + 4$