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Grade: 12
        

how to find equivalent mass?

8 years ago

Answers : (2)

SAGAR SINGH - IIT DELHI
879 Points
							

Dear student,

Equivalent mass is equal to the molecular or atomic mass divided by the number of electrons involved in the reaction per molecule, atom or ion. For example in the reaction,

two electrons are needed to produce one molecule of hydrogen gas. So, 2 Faraday of electricity is needed to produce one mole of hydrogen gas.

Hence,

For the reaction,

per mole of copper atoms, 2 faradays are needed. So, the equivalent mass of copper is half of its atomic mass.

 

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

8 years ago
Fawz Naim
37 Points
							

equivalent mass of an acid is=molecular wt/basicity

equivalent mass of a base=molecular wt/acidity

equivalent mass of a salt=molecular wt/total magnitude of positive charge

8 years ago
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