Balance the following equation: BaCl 2 + Al 2 SO 4 3 → BaSO 4 + AlCl 3

The balancing of chemical equation means to equalise the number of atoms of each element on both the sides of equation. It always follows Law of Conservation of mass. 3 BaCl 2 + Al 2 SO 4 3 → 3 BaSO 4 + 2 AlCl 3 It is a double displacement reaction. The reaction in which two compounds reacts to form two other compounds by mutual exchange of atoms or group of atoms are called double displacement reactions.

Balance the following equation: Fe 2 O 3 + Al → Al 2 O 3 + Fe

The balancing of chemical equation means to equalise the number of atoms of each element on both the sides of equation. Equation is balanced by hit and trial method. Count the number of atoms of various elements on both sides of the equation and make them equal by multiplying formulae by suitable numbers. Fe 2 O 3 + 2 Al → Al 2 O 3 + 2 Fe It is a displacement reaction. Aluminium is more reactive than iron. Therefore, aluminium displaces the iron from iron oxide solution.

Balance the following equation: C 2 H 6 + O 2 → CO 2 + H 2 O

The balancing of chemical equation means to equalise the number of atoms of each element on both the sides of equation. Equation is balanced by hit and trial method. Count the number of atoms of various elements on both sides of the equation and make them equal by multiplying formulae by suitable numbers. 2 C 2 H 6 + 7 O 2 → 4 CO 2 + 6 H 2 O

E M B I B E

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 5

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Explain: All displacement reactions are not called double displacement reactions(give equation).

Important Questions on Chemical Reactions and Equations

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 6

Balance the following equation:

${BaCl}_{2} + {Al}_{2} {({SO}_{4})}_{3} \to {BaSO}_{4} + {AlCl}_{3}$

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 6

Balance the following equation:

${Fe}_{2} O_{3} + Al \to {Al}_{2} O_{3} + Fe$

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 6

Balance the following equation:

$C_{2} H_{6} + O_{2} \to {CO}_{2} + H_{2} O$

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 7

Give an example of decomposition reaction. Describe an activity to illustrate such a reaction by heating.

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 8

The reaction which proceeds by the evolution of heat is known as _____ reaction.

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 8

The balancing of chemical equation is in accordance with law of conservation of _____.

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 8

The reaction in which heat is absorbed is called _____ reaction.

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 1 - Chemical Reactions and Equations>Revision Exercise>Q 1

What is a chemical equation? What information do we get from a chemical equation? Explain with the help of examples. Why is it necessary to balance a chemical equation?

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