Is equivalent mass always constant?

Is equivalent mass always constant?

Note: Equivalent weight of acid is not a constant. In this reaction, the equivalent weight of carbonic acid is equal to its molecular weight. Carbonic acid may react with two molecules of sodium hydroxide to form sodium carbonate and water.

Can equivalent weight of an element be variable?

The equivalent weight of an element is variable.

Is equivalent mass fixed?

Equivalent mass of an element is expressed as the combining mass relative to the masses of another element i.r. it is simply a number. So, it has no unit expressed in gram, then it is called gram equivalent mass. When an element combines with oxygen or chlorine to give only one compound, the equivalent mass is fixed.

How is equivalent weight determined?

The equivalent weight of an element is its gram atomic weight divided by its valence (combining power).

Is molecular weight constant?

The molar mass constant, usually denoted by Mu, is a physical constant defined as the ratio of the molar mass of an element (or a compound) and its relative mass. The mole and the relative atomic mass were originally defined in the International System of Units (SI) in such a way that the constant was exactly 1 g/mol.

Is equivalent weight and equivalent mass same?

Equivalent weight (also known as gram equivalent) 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. Equivalent weight has the dimensions and units of mass, unlike atomic weight, which is dimensionless.

What is the equivalent weight of a compound?

Equivalent Weight. The weight of a compound that contains ONE EQUIVALENT of a proton (for acid) or ONE EQUIVALENT of an hydroxide (for base). In this example, the magnitude of the equivalent weight of sulfuric acid is HALF of that of the molecular weight.

Is Valency a constant?

The number of electrons gained or lost by an atom to complete its outermost shell is known as valency. So, the reason for bond formation or a chemical reaction that takes place between atoms is that atoms are always in a constant struggle to reach the stable state by completing their outermost orbit or shell.

How do you find equivalent in chemistry?

To calculate the equivalent mass of a base, simply divide the molar mass of the base by the number of hydroxyl groups. Take, for example, calcium hydroxide Ca(OH)₂. A few simple calculations yield an equivalent of 37g/mol. To find the equivalent of an acid, divide the acid’s molar mass by the number of protons.

What is specific gas constant?

The specific gas constant is defined as the ratio of molar gas constant to the molar mass of the gas and is measured in the units, J/kg∙K . It can be written mathematically as: Rs = R / M , where M is the molar mass of the gas or mixture.

Is the equivalent mass of any element ever constant?

When it comes to building your nest egg, you have more options than you may think. As u asked about equivalent mass of any element, here is the specific answer. No, the equivalent weight of an element is never constant as it depends upon ths valancy of the element, so as the valancy of element changes the value of equivalent weight also changes.

What is the equivalent weight of an element?

equivalent weight. The equivalent weight of an element or radical is equal to its atomic weight or formula weight divided by the valence it assumes in compounds. The unit of equivalent weight is the atomic mass unit ; the amount of a substance in grams numerically equal to the equivalent weight is called a gram equivalent.

What is the equivalent weight of a solution in chemistry?

By Jack Ori. In science, the equivalent weight of a solution is the molecular weight of the solute, or dissolved substance, in grams divided by the valence of the solute. Equivalent weight predicts the mass of a substance that will react with one atom of hydrogen in an acid-base analysis such as a titration.

How do you calculate equivalent weight?

Here’s a Calculator to Help You. In science, the equivalent weight of a solution is the molecular weight of the solute, or dissolved substance, in grams divided by the valence of the solute. Equivalent weight predicts the mass of a substance that will react with one atom of hydrogen in an acid-base analysis such as a titration.