Question

What is the equivalent weight of iron in ferric chloride?

Answer 1

Hint: The inorganic chemical with the formula (\[FeC{l_3}\]) is iron(III) chloride. It's also known as ferric chloride, and it's a common iron compound with a +3 oxidation state. With a melting point of\[307.6{\text{ }}^\circ C\], the anhydrous chemical is a crystalline solid. The colour of the crystals varies depending on the viewing angle: reflected light appears dark green, while transmitted light appears purple-red.

Complete answer:
The mass of one equivalent, that is, the mass of a given material that will mix with or displace a specified quantity of another substance, is known as equivalent weight. The mass of an element that combines with or displaces 1.008 grams of hydrogen, 8.0 grams of oxygen, or 35.5 grams of chlorine is its equivalent weight. These figures are calculated by dividing the atomic weight by the typical valence; for oxygen, this is \[\;\frac{{16.0{\text{ }}g{\text{ }}}}{2} = {\text{ }}8.0{\text{ }}g\].
Equivalent weight has the dimensions and units of mass, unlike atomic weight, which is dimensionless. Equivalent weights were originally determined by experiment, but (insofar as they are still used) are now derived from molar masses. Additionally, the equivalent weight of a compound can be calculated by dividing the molecular mass by the number of positive or negative electrical charges that result from the dissolution of the compound.
The molecular weight of the solute or dissolved material in grammes divided by the valence of the solute gives the equivalent weight.
The atomic weight of ferric chloride is 55.845 and the valency of Fe is 3.
As a result, the equivalent weight is \[\frac{{55.845}}{3}{\text{ }} = {\text{ }}18.615\]

Note:
Iron(III) chloride is a poisonous, caustic, and acidic substance. The anhydrous substance is an effective dehydrator. Although human poisoning cases are uncommon, ferric chloride poisoning can cause significant morbidity and mortality. Accidental ingestion or misdiagnosis are caused by incorrect labelling and storage. Early detection is critical, especially in individuals who have been severely poisoned.