Question

carbon
(f). Give one word for the following:

(i). A metal which reacts with steam liberating hydrogen & the reaction is Reversible.
(ii). A chemical used in the manufacture of fertilizers.
(iii). A catalyst used in production of basic gas from nitrogen.
(iv).The gas which has now replaced hydrogen in air balloons.
(v). The product formed on combustion of hydrogen in air.
I​

Answer 1

Answer:

i) iron metal

ii)ammonia

iii)The process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. with ΔH=−92.4kJ/mol. The catalyst: The catalyst is actually slightly more complicated than pure iron.

iv)Helium

v) water

Explanation:

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Answer 2

1) Iron

Iron reacts with steam water and does not react with normal water. Also the reaction is reversible. The reaction between the iron metal and the steam water gives metal oxide as well as hydrogen gas. Also this reaction is reversible.

2) Ammonia

The ammonia is used to make nitric acid, with which it is then mixed to produce nitrate fertilizers such as ammonium nitrate (AN). Ammonia may also be mixed with liquid carbon dioxide to create urea.

3)

The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron.

4) Helium

But considering safety, Helium has replaced Hydrogen in weather balloons.

5) Water

Hydrogen burns in oxygen to form water. The flame is almost colourless. Mixtures of hydrogen and oxygen (or hydrogen and air) can be explosive when the two gases are present in a particular ratio, so hydrogen must be handled very carefully.

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