B) STUDY THE CHEMICAL REACTION AND ANWER THE FOLLOWING QUESTIONS. (M-5) Zinc + sulphuric acid → zinc sulphate + hydrogen
a) Enlist reactant and product of above reaction? b) Write molecular equation for the reaction.
c) Chemical reaction suffers from many limitations any two?
d) Define balanced equation
e) Write down law of conservation of energy
Answers
Answer:
Define balanced equation
A-c) The chemical equation for Zinc + Sulphuric acid giving Zinc sulphate + Hydrogen is as follows:
Zn+H 2SO 4→ZnSO 4+H 2
The reactants are zinc and sulphuric acid, whereas, the products are zinc sulphate and hydrogen.
In the given molecular reaction, (g) indicates gas i.e. hydrogen is a gas
D) The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.
E) The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.