Which of the following is a first order reaction?

2 H I ⟶ H_{2} + I_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 N O_{2} ⟶ 2 N O + O_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 N O + O_{2} ⟶ 2 N O_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

N H_{4} N O_{2} ⟶ N_{2} + 2 H_{2} O

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is A $N H_{4} N O_{2} ⟶ N_{2} + 2 H_{2} O$
Given reactions are elementary reactions. For an elementary reaction
$a A \to b B + c C$
rate is given by ${K [A]}^{9}$
Hence for option $(D)$ value of $a$ is $1$ , hence it is a first order reaction.

Suggest Corrections

Similar questions

Q. What is the relation between the equilibrium constants

K

K_{1}

and

K_{2}

for the following reactions?

N_{2} + 2 O_{2} ⇋ 2 N O_{2}, K

N_{2} + O_{2} ⇋ 2 N O, K_{1}

2 N O + O_{2} ⇋ 2 N O_{2}, K_{2}

Q. For the reaction,

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

which of the following is false?

Q. The molecularity of the reaction

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

is :

Type 1	Type 2
I. $S O_{2} C l_{2} \to S O_{2} + C l_{2}$	a. pseudo unimolecular reaction
II. $2 N O_{2} \to 2 N_{2} + O_{2}$	b. first order reaction
III. $2 N O + O_{2} \to 2 N O_{2}$	c. second order reaction
IV. $C H_{3} C O O C_{2} H_{5} + H_{2} O + H^{+} \to C H_{3} C O O H + C_{2} H_{5} O H$	d. third order reaction

The correct matching is :

The possible mechanism for the reaction:

$2 H_{2 +} 2 N O \to N_{2} + 2 H_{2} O$ is

$(i) 2 N O ⇌ N_{2} O_{2} (i i) N_{2} O_{2} + H_{2} \to N_{2} O + H_{2} O (slow) (i i i) N_{2} O + H_{2} \to N_{2} H_{2} O (fast)$ What is (i) the rate law for the reaction (ii) the order of the reaction?

Join BYJU'S Learning Program

Which of the following is a first order reaction?

The correct option is A NH4NO2⟶N2+2H2OGiven reactions are elementary reactions. For an elementary reaction aA→bB+cCrate is given by K[A]9Hence for option (D) value of a is 1, hence it is a first order reaction.

The correct option is A $N H_{4} N O_{2} ⟶ N_{2} + 2 H_{2} O$
Given reactions are elementary reactions. For an elementary reaction
$a A \to b B + c C$
rate is given by ${K [A]}^{9}$
Hence for option $(D)$ value of $a$ is $1$ , hence it is a first order reaction.