Chemistry Language Of Chemistry Exercise 1b
Please Select
1 What is a chemical equation? Why it is necessary to balance it.
Solution :
2 State the information conveyed by the following equation.
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2
Solution :
3 Write the limitation of reaction given in question 2.
Solution :
4 Write chemical equations for the following equations and balance them.
a) Carbon + Oxygen → Carbon-di-oxide
b) Nitrogen + Oxygen → Nitrogen monoxide
c) Calcium + Nitrogen → Calcium nitride
d) Calcium oxide + carbon dioxide → Calcium carbonate
e) Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen
Solution :
5 Balance the following equations
a) Fe + H2O → Fe3O4 + H2
b) Ca + N2 → Ca3N2
c) Zn + KOH → K2ZnO2 + H2
d) Fe2O3 + CO → Fe + CO2
e) PbO + NH3 → Pb + H2O + N2
f) Pb3O4 → PbO + O2
g) PbS + O2 → PbO + SO2
h) S + H2SO4 → SO2 + H2O
i) S + HNO3 → H2SO4 + NO2 + H2O
j) MnO2 + HCl → MnCl2 + H2O + Cl2
k) C + H2SO4 → CO2 + H2O + SO2
l) KOH + Cl2 → KCl + KClO + H2O
m) NO2 + H2O → HNO2 + HNO3
n) Pb3O4 + HCl → PbCl2 + H2O + Cl2
o) H2O + Cl2 → HCl + O2
p) NaHCO3 → Na2CO3 + H2O + CO2
q) HNO3 + H2S → NO2 + H2O + S
r) P + HNO3 → NO2 + H2O + H3PO4
s) Zn + HNO3 → Zn(NO3)2 + H2O + NO2
Solution :
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