Advertisements
Advertisements
Question
Show the formation of Na2O by the transfer of electrons.
Advertisements
Solution
`Na_2O`
Na=11=2,8,1 (Valency = 1)
O = 8 = 2,6 (Valency = 2)
(a) `Na → Na^(+)+ e^-`
`(Na → Na^(+)+e^-) xx 2`
`2Na → 2Na + 2e^-`
(b) `O + e^(-)→ O^-`
`(O + e^(-) → O^- ) xx 2`
`2O + 2e^(-) → O^-`
`i.e. 2Na + O → Na_2O`
APPEARS IN
RELATED QUESTIONS
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Aluminium burns in chlorine to form aluminium chloride (AlCl3). Write a balanced chemical equation for this reaction.
State one characteristic of the chemical reaction which takes place when wax is burned in the form of a candle.
When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.
- Name any two metals which can behave like metal X.
- Name any two acids which can behave like acid Y.
- Name the gas Z.
- Is the gas Z lighter than or heavier than air?
- Is the reaction between metal X and dilute acid Y exothermic or endothermic?
- By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical states of all the reactants and products.
Name the type of chemical reaction shown by the following equation:
2Mg+ O2 → 2MgO
Write your observations and name the product when
Iron nails are added to an aqueous solution of copper sulphate.
Write word equation for the following skeletal equation:
\[\ce{Zn + HCl -> ZnCl2 + H2}\]
Balance the equation stepwise.
Ag(s) + HCl(aq) → AgCl ↓+ H2 ↑
Write the chemical equation for the following word equation and balance them.
Sodium reacts with water to form sodium hydroxide and hydrogen
Balance the following simple equation:
NaOH + Cl2 → NaCl + NaClO + H2O
