Question

Mention three ways by which usseal chemical equation
can be made more informative.
​

Answer 1

ANSWER

The chemical equation can be made more informative by mentioning the physical states of the reactants and the products If a gas is liberated in the product, then it is represented by an upward directing arrow (↑) and if the

arrow (↑) and if theproduct formed is in the form of a precipitate, it is represented by a downward directing arrow (↓).

THANKS

Answer 2

How to make a chemical equation more informative?

CBSE Class 10

CBSE Class 10 Science

cbse chemicalequations

How to make a chemical equation more informative?

CBSE Class 10

CBSE Class 10 Science

cbse chemicalequations

prasanna

Oct '16

Chemical equations can be made more informative by expressing the following characteristics of the reactants and products.

Physical state

ii) Heat exchange (exothermic or endothermic change)

iii) Gas evolved (if any)

iv) Precipitate formed (if any)

i) Expressing the physical state : The physical state of the substances may be mentioned along with their chemical formulae. The different states i.e., gaseous, liquid and solid states are represented by the notations (g), (Z) and (s) respectively. If the substance is present as a solution in water, it is represented as (aq).

ii) Heat exchange : Heat is liberated in exothermic reactions arid heat is absorbed in endothermic reactions.

iii) Gas evolved : If a gas is evolved in a reaction, it is denoted by an upward

arrow or (g).

iv) Precipitate formed : If a precipitate is formed in the reaction, it is denoted by a downward arrow