Question

50 POINTS

BALANCE THE EQUATIONS

1.FeSO4 → Fe2O3 + SO2 + SO3
2.Pb(NO3)2 + KI → PbI2 + KNO3
3.Na2SO4 + BaCl2 → BaSO4 + NaCl
4.MnO2 + HCl → MnCl2 + H2O + Cl2
5.What is the difference between chemical change and chemical equation?
6.Why do balance a chemical equation?

Answer 1

the balanced equations are-

1) 2FeSO4= Fe2O3+SO2+SO3

2)Pb(NO3)2 + 2KI = 2KNO3 + PbI2

3)BaCl2 + Na2SO4 = BaSO4 + 2NaCl

4)Mno2+Hcl=MnCl2+H2O+Cl2

5)Chemical reaction refers to the process where two or more substances react together to form products. Chemical equation is the representation of chemical reactions using symbols.

Chemical reaction is the process in which one reactant breaks or two or more reactants reacts to form one or more products but chemical equation represents the reaction which had occured by symbols.

6)Chemical equations need to be balanced in order to satisfy the law of conservation of matter, which states that in a closed system matter is neither created nor destroyed.

hope it helps you :)

by Roshni

Answer 2

Answer:

1. 2FeSO4
2. 2kI and 2kNO3
3. 2Nacl
4. 4hcl and 2h2o
5. chemical change is a changes happening in their state, colour, temperature during the reaction , but chemical equation is not
6. to satisfy the law of conservation of mass