how to calculate equivalent no. of any compounds and molecules or atom
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how to calculate equivalent no. of any compounds and molecules or atom
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When chemicals combine, they do so in known, fixed proportions. Even if you have never formally worked with chemicals yourself, you have probably seen your share of chemical reactions written out, and know that they appear in a predictable format. For example, consider the reaction of sulfuric acid and hydroxide ion to produce water and sulfate ion:
H2SO4 + 2OH− → 2H2O + SO42−
The numbers in front of the molecules, the coefficients, show the numbers of each reactant and product molecule in relation to each other; the subscripts within the compounds show how many atoms of each type are in a given molecule. These numbers are always integers, not fractional numbers like 4.24 or 1.3. But what do they represent?
The concept of equivalent weight allows you to explore the fact that atoms combine to form molecules in fixed number ratios, not mass ratios. That is, while element masses differ, when it comes to bonding with other atoms, the number of atoms, expressed in moles, is the determining factor in how much of a given element or compound will react with a given mass of another.
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Answer:
equivalent weight is the weight of a compound that reacts with 8 gm of oxygen
in acids it is-molecular weight÷basicity
in base it is-molecular weight÷acidity
for any other compound -molecular weight÷charge on the anion ot cation