Advertisements
Advertisements
Question
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Advertisements
Solution
\[\ce{Al + H2O->Al2O3 + H2}\]
To balance Al and O atoms equal
\[\ce{2Al + 3H2O->Al2O3 + H2}\]
But there are 6 atoms of H on left and 2 atoms of H on right.
∴ \[\ce{2Al + 3H2O->Al2O3 + 3H2}\]
APPEARS IN
RELATED QUESTIONS
Balance the following equation:
Zn + HCI → ZnCI2 + H2
Write balanced chemical equations for the following word equation:
Sodium + chlorine → Sodium chloride
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{N2 + 3H2⇌NH3}\]
Balance the following important equation:
\[\ce{Al(OH)3 -> Al2O3 + H2O}\]
Balance the following important equation:
\[\ce{AgCl + NH4OH -> Ag(NH3)2Cl + H2O}\]
Balance the following important equation:
NH3 + O2 → N2 + H2O (burning of NH3)
When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:
Which of the following is(are) an endothermic process(es)?
- Dilution of sulphuric acid
- Sublimation of dry ice
- Condensation of water vapours
- Evaporation of water
Complete the missing component /variable given as x and y in the following reactions :
`"Pb"("NO"_3)_2("aq") + 2"Kl"("aq") -> "Pbl"_2(x) + 2"KNO"_3("y")`
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.
