Question

a) what are typical properties of hydrogen ?
b) write 3 uses of H2O2 in modern times?​

Answer 1

Answer:

a) At standard temperature and pressure, hydrogen is a nontoxic, nonmetallic, odorless, tasteless, colorless, and highly combustible diatomic gas with the molecular formula H2. Hydrogen is also prevalent on Earth in the form of chemical compounds such as hydrocarbons and water.

b) Hydrogen peroxide is a mild antiseptic used on the skin to prevent infection of minor cuts, scrapes, and burns. It may also be used as a mouth rinse to help remove mucus or to relieve minor mouth irritation (e.g., due to canker/cold sores, gingivitis).

Explanation:

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Answer 2

(a) The typical properties of hydrogen are :

$\bigstar$ It is electronegative in nature.

$\bigstar$ It has -1 and +1 oxidation state.

$\bigstar$ It forms largest number of covalent compounds.

$\bigstar$ It slightly resembles with halogen.

$\bigstar$ H₂O is amphoteric where as halogens form acidic, alkali metal forms basic oxides.

(b) Uses of H₂O₂ in modern times are :

$\bigstar$ It is used as bleaching agent for hair and also a mild isinfectant

$\bigstar$90% solution of H₂O₂ is used as fuel in submarines and rockets.

$\bigstar$ It is used as bleaching agent for textiles, paper, pulp, leather, oils, fats, etc

$\bigstar$ It is used as antiseptic in medicine and surgery

$\bigstar$ It is used to restore the old lead paintings.