eq. wt = mol. wt. / valency

 

eq wt. of acid = mol. wt. / basicity  ------------- (no. of replacable H⁺  atoms)

 

eq. wt of base = mol. wt / acidity    ------------- (no. of replacable OH^- atoms)

 

eq. wt of ion = mol. wt / charge on the ion

 

eq. wt of salt = mol. wt /total no. of +ive charges

 

eq. wt by hydrogen disp. method = wt. of element/mol. wt of hydrogen(in that substance)  *1

 

eq. wt by oxygen disp. method = wt. of element/mol. wt of oxygen  * 8

 

eq. wt by chloridedisp. method = wt. of element/mol. wt of chlorine  *  35.5