Balancing of equations is based on-Principle of conservation of momentumAvogadro-s numberConditions a chemical reaction to take placeLaw of conservation of mass

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Standard IX

Chemistry

Mole Concept & Avogadro Number

Question

Balancing of equations is based on:
Principle of conservation of momentum
Avogadro's number
Conditions for a chemical reaction to take place
Law of conservation of mass

Principle of conservation of momentum

Conditions for a chemical reaction to take place

Avogadro's number

Law of conservation of mass

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Solution

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Matter cannot be destroyed or created in chemical reactions. This is the law of conservation of mass. Thus the mass of the products is equal to the mass of the reactants in a chemical reaction. Hence, balancing of equation is based on law of conservation of mass or matter.

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Similar Questions

Assertion :The balancing of chemical equations is based on law of conservation of mass. Reason: Total mass of reactants is equal to total mass of products.

View Solution

We know that balancing of a chemical equation is entirely based on law of conservation of mass. However the concept of Principle of Atom Conservation (POAC) can also be related to law of conservation of mass in a chemical reaction. So, POAC can also act as a technique for balancing a chemical equation. For example, for a reaction :

A B C_{3} \to A B + C_{2}

On applying POAC for A, B & C and relating the 3 equations, we get :

\frac{n_{A} B C_{3}}{2} = \frac{n_{A B}}{2} = \frac{n_{C_{2}}}{3}

n_{x} :

number of moles of X) Thus, the coefficients of

A B C_{3}, A B & C_{2}

in the balanced chemical equation will be 2, 2 & 3 respectively and the balanced chemical equation can be represented as :

2 A B C_{3} \to 2 A B + 3 C_{2}

Now answer the following question :

If the atomic masses of X and Y are 10 & 30 respectively, then the mass of

X Y_{3}

formed when 120 g

Y_{2}

reacts completely with sufficient amount of X is : Reaction

X + Y_{2} \to X Y_{3}

View Solution

The chemical equations are balanced to satisfy one of the following laws in chemical reactions. This law known as :

(a) law of conservation of momentum

(b) law of conservation of mass

(d) law of conservation of magnetism

View Solution

We know that balancing of a chemical equation is entirely based on law of conservation of mass. However, the concept of Principle of Atom Conservation (POAC) can also be related to law of conservation of mass in a chemical reaction. So, POAC can also act as a technique for balancing a chemical equation. For example, for a reaction:

A B C_{3} \to A B + C_{2}

On applying POAC for A,B & C and relating the 3 equations, we get :

\frac{n_{A B C_{3}}}{2} = \frac{n_{A B}}{2} = \frac{n_{C_{2}}}{3}

(

n_{x}

: number of moles of X)
Thus, the coefficients of

A B C_{3}

A B

C_{2}

in the balanced chemical equation will be 2, 2 & 3 respectively and the balanced chemical equation can be represented as:

2 A B C_{3} \to 2 A B + 3 C_{2}

Now answer the following question.

Which of the following relation is correct regarding the numerical coefficients p, q, r in the balanced chemical equation,

p A + q B_{2} \to r A_{2} B_{5}

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Assertion :The mass and the charge are balanced on both sides of the reaction is a balanced chemical equation. Reason: The chemical reaction should be balanced so that it can follow the law of conservation of mass.

View Solution

Balancing of equations is based on:Principle of conservation of momentumAvogadro's numberConditions for a chemical reaction to take placeLaw of conservation of mass

Matter cannot be destroyed or created in chemical reactions. This is the law of conservation of mass. Thus the mass of the products is equal to the mass of the reactants in a chemical reaction. Hence, balancing of equation is based on law of conservation of mass or matter.

Balancing of equations is based on:
Principle of conservation of momentum
Avogadro's number
Conditions for a chemical reaction to take place
Law of conservation of mass