Question

28) The following is not a fixed quantity
1) atomic weight of an element
2) equivalent weight of an element(or) compound
3) Molecular weight of compound
4) formula of weight of a Substance​

Answer 1

Answer:

Equivalent weight (also known as gram equivalent[1]) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance. The equivalent weight of an element is the mass which combines with or displaces 1.008 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine. These values correspond to the atomic weight divided by the usual valence;[2] for oxygen as example that is 16.0g / 2.

For acid-base reactions, the equivalent weight of an acid or base is the mass which supplies or reacts with one mole of hydrogen cations (H+

). For redox reactions, the equivalent weight of each reactant supplies or reacts with one mole of electrons (e−) in a redox reaction.[3]

Explanation:

ans is option 2

Answer 2

Answer:

An element's (or compound's) equivalent weight is not a fixed quantity. As a result, B is the proper response.

Explanation:

1. The average mass of an element's atoms measured in an atomic mass unit is called its atomic mass.
2. An element's equivalent weight is equal to its gramme atomic weight divided by its valence (combining power). A substance's equivalent weight might change depending on the sort of reaction.
3. The entire mass of a chemical is its molecular mass, or molecular weight. It equals the total of each atom's specific atomic masses in the molecule.
4. The total of the atomic weights of all atoms occurring in a chemical formula is known as formula weight in chemistry.