Table of Contents
How will you define equivalent mass?
The equivalent mass of an element, compound or ion is the number of parts of mass of an element which combines with or displaces 1.008 parts of hydrogen or 8 parts of oxygen or 35.5 parts of chlorine.
What is equivalent mass with example?
The equivalent weight of an element is its gram atomic weight divided by its valence (combining power). Some equivalent weights are: silver (Ag), 107.868 grams (g); magnesium (Mg), 24.312/2 g; aluminum (Al), 26.9815/3 g; and sulfur (S, in forming a sulfide), 32.064/2 g.
What is equivalent mass Why do we determine?
1. The equivalent mass is the mass of an acid such that when dissociated will yield one mole of hydrogen ions. We determine equivalent mass and not molecular mass because some acids have more available hydrogen ions than others.
What is equivalent mass class 11th?
The number of parts by mass of a substance that combines with or displaces 1.008. parts by mass of hydrogen or 8.0. parts of oxygen or 35.5. parts of chlorine is called its equivalent mass (EM).
How do you find the equivalent mass for Class 11?
Equivalent Mass = Mass of the Metal × 11200 Volume of Hydrogen Liberated (STP) .
How do you find an equivalent number?
EW is the equivalent weight in g/equivalent. It is calculated by dividing the molecular weight of solute by the number of equivalents per mole of solute (Equation 2). For acids, the number of equivalents per mole is the number of H+ ions contributed by the acid per mole of acid.
How do you calculate the number of gram equivalents?
Gram equivalent weight is equal to mass in grams numerically equal to Equivalent Weight. To calculate the Gram Equivalent Weight, we use the formula Eq = MW / n.
What is equivalent concept?
An equivalent concept is “gram equivalent weight” or “gram equivalent” concept. It is based on equivalent weight. Equivalent weight is measure of mass proportion of an element, compound or ion in which it combines with the mass of other chemical entities.
What is the equivalent weight of caco3?
50.045
The equivalent weight of calcium carbonate (CaCO3) is 50.045, as calculated above.
What is the formula of equivalent mass?
Equivalent mass, as said earlier, depends upon the valency of the element. The formula to calculate the equivalent mass of an element is given by. Equivalent Mass = Atomic Mass Valency. \ext{Equivalent Mass}=\\dfrac{\ext{Atomic Mass}}{\ext{Valency}}. Equivalent Mass = Valency Atomic Mass .
What is the definition of equivalent mass?
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. 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.
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.
What is the equivalent mass of K2MnO4?
That is, the oxidation state changes by 1. Thus, the equivalent mass = molecular mass/1 = molecular mass = M Hence, the equivalent mass of KMnO4 is M when it converts over to K2MnO4.