Answer
Verified
439.5k+ views
Hint: Balancing chemical equations is based on the law of conservation of mass. The sum of the masses of the products is always the same as the sum of the masses of the reactants. It also states that mass is neither created nor destroyed in any ordinary chemical reaction.
Complete step by step answer:
A chemical equation is a simple way to describe a chemical reaction using symbols and formulas instead of words. During a chemical reaction, the atoms rearrange to form new bonds between atoms. The products formed in a chemical reaction have different properties from the reactants.
The steps involved in balancing chemical equations are:
Write the formula of each reactant and product.
Coefficients are added before elements so that the number of atoms in each element in reactants side is equal to that in the product side.
Subscripts cannot be changed.
Check the masses of reactants and products. It should be equal.
Now let’s consider each option.
A. \[4{\text{N}}{{\text{H}}_3} + 5{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 6{{\text{H}}_2}{\text{O}} + \Delta \]
In these chemical reactions, the reactant side has four nitrogen, twelve hydrogen and ten oxygen atoms. The product side has four nitrogen, twelve hydrogen and ten oxygen. Thus the number of atoms are equal both in LHS and RHS. Thus it is balanced.
B. \[4{\text{N}}{{\text{H}}_3} + 3{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 2{{\text{H}}_2}{\text{O}} + \Delta \]
Here, the number of hydrogen atoms is LHS and RHS is not equal. It differs by eight hydrogen in RHS, thus not said to be balanced.
C. \[{\text{2N}}{{\text{H}}_3} + 5{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}{\text{2NO}} + 6{{\text{H}}_2}{\text{O}} + \Delta \]
This equation is different by the number of hydrogen and oxygen atoms.
D. \[4{\text{N}}{{\text{H}}_3} + 4{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 4{{\text{H}}_2}{\text{O}} + \Delta \]
This is different by the number of hydrogen atoms.
So, the correct answer is Option A .
Note:
Oxidation of ammonia is carried out by Ostwald’s process in industries. It is carried out in a catalytic chamber. This chamber contains platinum gauze which serves as a catalyst. In primary oxidation, $95\% $ ammonia is converted into nitric oxide. Oxidation of ammonia is a reversible and exothermic reaction.
Complete step by step answer:
A chemical equation is a simple way to describe a chemical reaction using symbols and formulas instead of words. During a chemical reaction, the atoms rearrange to form new bonds between atoms. The products formed in a chemical reaction have different properties from the reactants.
The steps involved in balancing chemical equations are:
Write the formula of each reactant and product.
Coefficients are added before elements so that the number of atoms in each element in reactants side is equal to that in the product side.
Subscripts cannot be changed.
Check the masses of reactants and products. It should be equal.
Now let’s consider each option.
A. \[4{\text{N}}{{\text{H}}_3} + 5{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 6{{\text{H}}_2}{\text{O}} + \Delta \]
In these chemical reactions, the reactant side has four nitrogen, twelve hydrogen and ten oxygen atoms. The product side has four nitrogen, twelve hydrogen and ten oxygen. Thus the number of atoms are equal both in LHS and RHS. Thus it is balanced.
B. \[4{\text{N}}{{\text{H}}_3} + 3{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 2{{\text{H}}_2}{\text{O}} + \Delta \]
Here, the number of hydrogen atoms is LHS and RHS is not equal. It differs by eight hydrogen in RHS, thus not said to be balanced.
C. \[{\text{2N}}{{\text{H}}_3} + 5{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}{\text{2NO}} + 6{{\text{H}}_2}{\text{O}} + \Delta \]
This equation is different by the number of hydrogen and oxygen atoms.
D. \[4{\text{N}}{{\text{H}}_3} + 4{{\text{O}}_2}\xrightarrow[{{\text{Pt}}}]{{{{800}^ \circ }{\text{C}}}}4{\text{NO}} + 4{{\text{H}}_2}{\text{O}} + \Delta \]
This is different by the number of hydrogen atoms.
So, the correct answer is Option A .
Note:
Oxidation of ammonia is carried out by Ostwald’s process in industries. It is carried out in a catalytic chamber. This chamber contains platinum gauze which serves as a catalyst. In primary oxidation, $95\% $ ammonia is converted into nitric oxide. Oxidation of ammonia is a reversible and exothermic reaction.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE