Questions: Balance the following equations and identify the type of reaction(4marks): - C2H6+O2 CO2+H2O 2 C2H6+7 O2 -> 4 CO2+6 H2O - Li+ O2 Li2O combustion 4 Li+O2 -> 2 Li2O synthesis - Al(NO3)3+SrCO3 Al2(CO3)3+Sr(NO3)2 2 Al(NO3)3+3 SrCO3 -> Al2(CO3)3+3 Sr(NO3)2 - NO2 NO+O2 Double displacement.

Balance the following equations and identify the type of reaction(4marks):
- C2H6+O2 CO2+H2O
2 C2H6+7 O2 -> 4 CO2+6 H2O
- Li+ O2 Li2O
combustion
4 Li+O2 -> 2 Li2O synthesis
- Al(NO3)3+SrCO3 Al2(CO3)3+Sr(NO3)2
2 Al(NO3)3+3 SrCO3 -> Al2(CO3)3+3 Sr(NO3)2
- NO2 NO+O2

Double displacement.

Transcript text: - Balance the following equations and identify the type of reaction(4marks): - $\mathrm{C}_{2} \mathrm{H}_{6}+\mathrm{O}_{2} \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}$ \[ 2 \mathrm{C}_{2} \mathrm{H}_{6}+7 \mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O} \] - $\mathrm{Li}^{+} \mathrm{O}_{2} \mathrm{Li}_{2} \mathrm{O}$ combustion $4 \mathrm{Li}+\mathrm{O}_{2} \rightarrow 2 \mathrm{Li}_{2} \mathrm{O}$ synthesis - $\mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}+\mathrm{SrCO}_{3} \quad \mathrm{Al}_{2}\left(\mathrm{CO}_{3}\right)_{3}+\mathrm{Sr}\left(\mathrm{NO}_{3}\right)_{2}$ $2 \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}+3 \mathrm{SrCO}_{3} \rightarrow \mathrm{Al}_{2}\left(\mathrm{CO}_{3}\right)_{3}+3 \mathrm{Sr}\left(\mathrm{NO}_{3}\right)_{2}$ d. $\mathrm{NO}_{2} \mathrm{NO}+\mathrm{O}_{2}$ Dooble displacement.

Solution

Solution Steps

Step 1: Balance the Combustion Reaction of Ethane

The given unbalanced equation is: \[ \mathrm{C}_{2} \mathrm{H}_{6} + \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2} + \mathrm{H}_{2} \mathrm{O} \]

To balance it, we need to ensure the number of each type of atom is the same on both sides of the equation. The balanced equation is: \[ 2 \mathrm{C}_{2} \mathrm{H}_{6} + 7 \mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2} + 6 \mathrm{H}_{2} \mathrm{O} \]

This is a combustion reaction, where ethane ($\mathrm{C}_{2} \mathrm{H}_{6}$) reacts with oxygen ($\mathrm{O}_{2}$) to produce carbon dioxide ($\mathrm{CO}_{2}$) and water ($\mathrm{H}_{2} \mathrm{O}$).

Step 2: Balance the Synthesis Reaction of Lithium Oxide

The given unbalanced equation is: \[ \mathrm{Li} + \mathrm{O}_{2} \rightarrow \mathrm{Li}_{2} \mathrm{O} \]

To balance it, we need to ensure the number of each type of atom is the same on both sides of the equation. The balanced equation is: \[ 4 \mathrm{Li} + \mathrm{O}_{2} \rightarrow 2 \mathrm{Li}_{2} \mathrm{O} \]

This is a synthesis reaction, where lithium ($\mathrm{Li}$) reacts with oxygen ($\mathrm{O}_{2}$) to form lithium oxide ($\mathrm{Li}_{2} \mathrm{O}$).

Step 3: Balance the Double Displacement Reaction

The given unbalanced equation is: \[ \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3} + \mathrm{SrCO}_{3} \rightarrow \mathrm{Al}_{2}\left(\mathrm{CO}_{3}\right)_{3} + \mathrm{Sr}\left(\mathrm{NO}_{3}\right)_{2} \]

To balance it, we need to ensure the number of each type of atom is the same on both sides of the equation. The balanced equation is: \[ 2 \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3} + 3 \mathrm{SrCO}_{3} \rightarrow \mathrm{Al}_{2}\left(\mathrm{CO}_{3}\right)_{3} + 3 \mathrm{Sr}\left(\mathrm{NO}_{3}\right)_{2} \]

This is a double displacement reaction, where aluminum nitrate reacts with strontium carbonate to form aluminum carbonate and strontium nitrate.

Final Answer

Combustion of Ethane: $\boxed{2 \mathrm{C}_{2} \mathrm{H}_{6} + 7 \mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2} + 6 \mathrm{H}_{2} \mathrm{O}}$
Synthesis of Lithium Oxide: $\boxed{4 \mathrm{Li} + \mathrm{O}_{2} \rightarrow 2 \mathrm{Li}_{2} \mathrm{O}}$
Double Displacement Reaction: $\boxed{2 \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3} + 3 \mathrm{SrCO}_{3} \rightarrow \mathrm{Al}_{2}\left(\mathrm{CO}_{3}\right)_{3} + 3 \mathrm{Sr}\left(\mathrm{NO}_{3}\right)_{2}}$

Was this solution helpful?

Unhelpful

Helpful

Questions asked by other users

< Previous Next >

Thank you for your feedback.

Copied!