Advertisements
Advertisements
प्रश्न
Explain the following:
Bubbles are produced when acetic acid is added to a solution of sodium hydrogencarbonate.
Advertisements
उत्तर
When acetic acid is added to a solution of sodium hydrogencarbonate, carbon dioxide gas is formed which comes out in the form of bubbles.
Sodium hydrogencarbonate + Acetic acid → Sodium carbonate + Water + Carbon dioxide
APPEARS IN
संबंधित प्रश्न
Which metals do not corrode easily?
Which of the following methods is suitable for preventing an iron frying pan from rusting?
What is the corrosion of iron known as?
Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
State under what conditions corrosion is faster ?
Explain with reason:
Roasting is carried out on sulphide ores and not on carbonate ores.
Complete the process of iron rusting by filling the blanks. Suggest a way to prohibit the process.
The iron rust is formed due to........................... reaction. Different
regions on iron surface become anode and cathode.
Reaction on anode region :
`F_e(s) → Fe^(2+) (aq) +2e^-`
Reaction on anode region :
`O_2(g) + 4H^+(aq) +............................ → 2H_2 O (l) `
When Fe2+ ions migrate from anode region they react with ................... to form Fe3+ ions.
A reddish coloured hydrated oxide is formed from ............... ions. It is called rust.
`2Fe_(3+) (aq) + 4H_2O(l) → ................. + 6H_+(aq) `
A way to prevent rusting ..................................................................
Give reason.
A wooden article should be polished.
Give reason for the following:
A suspension of rust is basic in nature.
Copper objects lose their shine and form green coating of ____________.
