What do you mean by equivalent weight?

equivalent weight, in chemistry, the quantity of a substance that exactly reacts with, or is equal to the combining value of, an arbitrarily fixed quantity of another substance in a particular reaction. The equivalent weight of an element is its gram atomic weight divided by its valence (combining power).

What is equivalent weight formula?

Equivalent Weight = Molecular weight/ Valency Also, read: Chemical Reaction.

What is equivalent weight class 11?

The equivalent weight of an element is the mass which combines with 1 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine at STP. These values correspond to the atomic weight of the molecule divided by the usual valence shown by the atom present in the molecule.

What is equivalent weight and molecular weight?

The key difference between gram molecular weight and gram equivalent weight is that the term gram molecular weight refers to the mass of a molecule in grams, which is numerically equal to the molecular weight of that substance, whereas the term gram equivalent weight refers to the mass of one equivalent in grams.

What is normality and equivalent weight?

What is Normality? Normality refers to the gram equivalent of the substance being dissolved in one liter of the solution. Gram equivalent weight can be defined as the molecule’s reactive capacity. It is measured as ‘N’,eq/L or meq/L where ‘eq’ stands for equivalents while ‘meq’ stands for milliequivalent.

What is the equivalent weight of CO2?

One CO2 molecule is reacting with 2 hydroxyl ions. Thus n-factor is 2 and its equivalent weight is 44/2 = 22g/mole.

How do you calculate equivalent?

The equivalent masses of acids, bases, and salts are calculated as follows:

1. Equivalent mass of an acid = molecular mass of the acid/basicity.
2. Equivalent mass of a base = molecular mass of the base/acidity.
3. Equivalent mass of a salt = molecular mass of the salt/total positive valency of metal atoms.

How do you calculate equivalent numbers?

It is defined as the number of moles of solute present in one litre of solution.

1. Molarity (M) =
2. Number of moles of solute =
3. Hence M.
4. Hence Number of moles of solute.
5. Number of equivalents of solute =
6. Hence N.
7. Hence Number of equivalents of solute = = N × V (in litre)
8. Equivalents mass =

What is the number of equivalent?

By this definition, the number of equivalents of a given ion in a solution is equal to the number of moles of that ion multiplied by its valence. If 1 mol of NaCl and 1 mol of CaCl2 dissolve in a solution, there is 1 equiv Na, 2 equiv Ca, and 3 equiv Cl in that solution.

How do you find an equivalent number?

e = M/n, where M = molar mass, and n = number of electrons transacted (either given up, or accepted) by the compound in a particular reaction.

How do you calculate equivalent normality?

Normality Formula

1. Normality = Number of gram equivalents × [volume of solution in litres]-1
2. Number of gram equivalents = weight of solute × [Equivalent weight of solute]-1
3. N = Weight of Solute (gram) × [Equivalent weight × Volume (L)]
4. N = Molarity × Molar mass × [Equivalent mass]-1

What is the equivalent weight of o2?

Oxygen has an atomic weight of 15.999 and always assumes valence 2 in compounds, so its equivalent weight is 7.9995.

How do I calculate equivalent weight?

Calculate the molecular weight of the substance Multiply the atomic weight by the element’s subscript in the molecular formula and add. In hydrates, multiply the weight of the water molecule by the number located between the dot and the H2O and add to the total.

How to calculate equivalent weight?

1) Gather information about the equivalent weight of the reacting substance. Consult chemical reference books to find out the valence and the molecular weight of the substance. 2) Figure the equivalent weight of the substance. The equivalent weight of the substance is equal to the molecular weight divided by the valence. 3) Calculate normality. Normality is the concentration of the substance of interest in a dissolving liquid. 4) Try an example. Dissolve sodium chloride (NaCl) in water. Sodium chloride has a valence of 1 and a molecular weight of 58.443.

How to calculate the equivalent weights?

Enter the molecular weight,valency value,and x for the unknown in the input field

Now click the button “Calculate x” to get the result

Finally,the equivalent weight value will be displayed in the output field

How do you calculate equivalent mass?

There are two formulas that may be used to calculate mass: mass is equal to the volume of an object multiplied by its density (m=v*d) and mass is equivalent to an object’s weight divided by the acceleration of gravity (m=w/g). The appropriate formula depends on the available variables.