Advertisements
Advertisements
Question
How do non-metals react with hydrogen? Explain with an example.
Advertisements
Solution
Non-metals react with hydrogen to form covalent hydrides. The non-metal hydrides are formed by the sharing of electrons; that is, non-metal hydrides are formed by covalent bonding.
Sulphur is a non-metal which combines with hydrogen to form a covalent hydride called hydrogen sulphide (H2S).
\[\ce{\underset{Hydrogen}{H2_{(g)}} + \underset{(Non-metal)}{\underset{Sulphur}{S_{(I)}}} -> \underset{(Covalent hydride)}{\underset{Hydrogen sulphide}{H2S_{(g)}}}}\]
Hydrogen sulphide gas has a characteristic odour resembling rotten eggs.
APPEARS IN
RELATED QUESTIONS
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
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?
What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?
Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
With the help of examples, describe how metal oxides differ from non-metal oxides.
Name two metals which cannot displace hydrogen from dilute acids.
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What special name is given to substances like aluminium oxide.
Name another metal oxide which behaves like aluminium oxide.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
The elements whose oxides can turn litmus solution red are:
(a) lithium and sodium
(b) copper and potassium
(c) carbon and hydrogen
(d) phosphorus and sulphur
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Which of the following property is not responsible for copper to be used as electrical conduction wires?
