Question

true/ false and correct the statement:

a) the removal of hydrogen from a substance is called reduction.

b) Nitric acid cannot be used to prepare hydrogen by its action pob active metals.

c) the reaction between hydrogen and nitrogen to form ammonia Issa reversible.

d) zinc can liberate hydrogen from water, acid and alkali solution.

e) hydrogen is combustible as well as a supporter of combustion.

f) hydrogen gas is easily liquefiable.

g) hydrogen molecule is monovalent.
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Answer 1

Answer:

The removal of hydrogen from a substance is called oxidation.

So a) False

Hydrogen cannot be prepared by the action of nitric acid on metals because it also releases nitrous oxide and nitric oxide.

So b) False

When hydrogen gas combines with nitrogen to form Ammonia the following chemical reaction will take place. Our equilibrium reaction will be

 N2(g) + 3H2(g) ⇔ 2NH3(g) + Heat 

In this case, Hydrogen and nitrogen react together to form ammonia.

So c) True

Zinc has the capability to release oxygen with water, acid and alkali.

So d) True

Hydrogen is neither combustible nor a supporter of combustion.

So e) False

Hydrogen is not easily liquificable.

So f) False

Hydrogen atom is monovalent as it has only one covalent bond.

Hence g). is True

Explanation:

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