Question

balance the following chemical reaction:
Pb(NO3)2(s)------^heat PbO(s)+NO2(g)+O2(g)

FeSO4------^heatFe2O3+SO2+SO3​

Answer 1

$\bigstar$ Answer $\bigstar$

(a) Given Chemical Equation

$\sf Pb{(NO_{3})}_2 \longrightarrow PbO+NO_{2} +O_{2}$

$\checkmark$ Balanced Chemical Equation $\checkmark$

$\red{\boxed{\sf 2\,Pb{(NO_{3})}_2 \longrightarrow 2\,PbO+4\,NO_{2} +O_{2}}}$

⇒ For Verification of Balanced Equation

Both Left-Hand-Side (Reactants) and Right-Hand-Side (Products) contain

$\sf \implies Pb=2$

$\implies \sf N=4$

$\implies \sf O=12$

Hence,

The Chemical Equation is said to be balanced

                                                      _________________

(b) Given Chemical Equation

$\sf FeSO_{4} \longrightarrow Fe_{2}O_{3}+SO_{2}+SO_{3}$

$\checkmark$ Balanced Chemical Equation $\checkmark$

$\blue{\boxed{\sf 2\,FeSO_{4} \longrightarrow Fe_{2}O_{3}+SO_{2}+SO_{3}}}$

⇒ For Verification of Balanced Equation

Both Left-Hand-Side (Reactants) and Right-Hand-Side (Products) contain

$\sf \implies Fe=2$

$\sf \implies S=2$

$\sf \implies O=8$

Hence,

The Chemical Equation is said to be balanced