How do you find the equivalent mass of an element?
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.
Is equivalent weight of an element variable?
The equivalent weight of an element is variable.
What is the equivalent weight of H 3 PO 4?
32.67 gram
The molecular weight of phosphoric acid is; (3+31+16*4)gram/mol = 98 gram/mol. Now Equivalent Weight = 98/3 gram/equivalent = 32.67 gram/equivalents.
What is equivalent weight of NaCl?
The valence of NaCl is 1. Equivalent Weight = Molecular weight/ Valency. = 58.44 / 1 = 58.44 g/mol. Therefore, the equivalent weight of sodium chloride (NaCl) is 58.44 g/mol.
How do you find equivalent weight?
The equivalent weight of an element is its gram atomic weight divided by its valence (combining power).
How can we find equivalent weight?
Equivalent Weight = Molecular weight/ Valency Also, read: Chemical Reaction.
Why atomic weight is not variable?
Also, the equivalent weight is dependent upon valency thus it is variable too. The atomic mass of a compound is constant and it is unique for every element. Therefore, the correct answer is option [B] Atomic mass. Note: We often think that the valency and oxidation number is the same thing but it is not.
What is the equivalent weight of H 3 PO 2?
The number of oxidation shifts is from 1 to +3. Therefore, for 2 molecules of H3PO2, the electron given is 2e-. Therefore, 4 electrons are used . In complete, thus, 4e- are exchanged.
What is the equivalent weight of CaCO3?
The equivalent mass of CaCO3 is 100g/2=50g. Thus,The equivalent mass of Calcium Carbonate is 50g.
What is the equivalent weight of al2 so4?
An element’s equivalent weight can also be given as the amount that displaces or combines with 1.008 g of Hydrogen or 8.0g of Oxygen or 35.5g of Chlorine. Hence the equivalent weight of $ A{l_2}{(S{O_4})_3} $ is 57 g/mol.
Which is the equivalent weight of an element?
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.
Which is the equivalent weight of calcium and oxygen?
Valencies of hydrogen, calcium and oxygen are 1,2 and 2 respectively. Hence, their equivalent weights are 1/1 =1, 40/2 = 20 and 16/2 = 8 respectively. The valence factor of an acid is equal to its basicity. The basicity of an acid is equal to furnishable hydrogen ion (proton) in its aqueous solution.
Why do we use equivalent weight and Gram equivalents?
The concepts of equivalent weight and gram equivalents help link the concept of molar ratios to the fact that different elements have different molecular weights. Some acids can donate more than one proton, introducing a difference between molecular weight and equivalent weight for these compounds. Sciencing_Icons_Science
Which is the equivalent unit of atomic mass?
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.
