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प्रश्न
What is the action of water on aluminium? Write the equation of the chemical reaction involved.
Explain the action of the following on aluminium:
Water
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उत्तर
Aluminium metal does not react with water under ordinary conditions because of the presence of a thin (but tough) layer of aluminium oxide on its surface. Aluminium reacts with steam to form aluminium oxide and hydrogen gas.
\[\ce{\underset{Aluminium}{2Al_{(s)}} + \underset{Steam}{3H2O_{(g)}} -> \underset{Aluminium oxide}{Al2O3_{(s)}} + \underset{Hydrogen}{3H2_{(g)}}}\]
संबंधित प्रश्न
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a ‘pop’ sound.
From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
- which reacts with water only on boiling, and
- another which does not react even with steam.
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Name the metal which has been placed just below copper in the reactivity series.
What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?
Complete and balance the following equation:
\[\ce{Na + O2 ->}\]
How do non-metals react with hydrogen? Explain with an example.
Why is white phosphorus kept immersed under water?
One of the following is not a neutral oxide. This is:
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3 solution?
State and explain the reaction of the following metal with a solution of copper sulphate:
Gold
Which of the following reactions will not occur? Why not?
- \[\ce{MgSO4_{(aq)} + Cu_{(s)} -> CuSO4_{(aq)} + Mg_{(s)}}\]
- \[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]
- \[\ce{MgSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Mg_{(s)}}\]
Write the name and formula of a molecule made up of three atoms of oxygen.
Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
