Question

For the formation of 3.65g of HCl gas what volume of hydrogen gas and chlorine gas at STP are required.

Answer 1

Hydrochloric acid, commonly known as muriatic acid, is a hydrogen chloride aqueous solution. It's a colourless liquid with a strong, unpleasant odour. It's considered a strong acid. In the digestive tracts of most animal species, including humans, it is a component of stomach acid. Hydrochloric acid is a common laboratory reagent and chemical used in industry.

Complete answer:
Hydrochloric acid is made by dissolving hydrogen chloride in water in an industrial setting. Hydrogen chloride may be made in a variety of ways, thus there are numerous precursors to hydrochloric acid. In the chlor alkali process, which generates hydroxide, hydrogen, and chlorine, the latter of which may be combined to make HCl, large-scale production of hydrochloric acid is nearly usually linked with industrial-scale production of other chemicals.
The general equation can be written as ${{H}_{2}}+C{{l}_{2}}\to 2HCl$
atomic mass of H is 1g
atomic mass of Cl is 35.5g
So the Molecular mass of HCl is 36.5g
From the equation we can write 1 mole of HCl requires 1 mole of Hydrogen and 1 mole of chlorine.
The mole is the International System of Units' basic unit of material quantity (SI). It is defined as a collection of precisely $6.02214076\times {{10}^{23}}$ particles, which may be atoms, molecules, ions, or electrons.
1 mole of HCl requires 1 mole of Hydrogen and 1 mole of chlorine.
Which means
36.5 g of HCl requires 1 g of Hydrogen and 35.5 g of chlorine.
Now to make 3.65 g of HCl we divide the reactants by 10
Which means
$\dfrac{36.5}{10}$ g of HCl require $\dfrac{1}{10}$ g of Hydrogen and $\dfrac{35.5}{10}$ g of chlorine.
3.65 g of HCl requires 0.1 g of Hydrogen and 3.55 g of chlorine.

Note:
Hydrochloric acid is the monoprotic acid least likely to conduct an interfering oxidation-reduction reaction among the six typical strong mineral acids in chemistry. Despite its acidity, it contains the non-reactive and non-toxic chloride ion, making it one of the safest strong acids to handle. Intermediate-strength hydrochloric acid solutions are quite stable when stored, and their concentrations remain constant over time. Hydrochloric acid is a good acidifying reagent because of these characteristics and the fact that it is accessible as a pure reagent. It is also reasonably priced.