Normality = C / F(eq)

1,2,3,4-butane tetracarboxylic acid is a quadroprotic (having 4 protons to give) acid. Thus, 1 normal solution of 1,2,3,4-butane tetracarboxylic acid would have a concentration of 0.25M. If 1 Liters of solution is to be prepared, the mole number of 1,2,3,4-butane tetracarboxylic acid would be 0.25, knowing that its MW=234.16, it would require you to put 0.25*234.16=58.54 grams of 1,2,3,4-butane tetracarboxylic acid into 1 liters of solution.

If anything is unclear, please ask. I wish the calculations are clear.

WIth best regards.

Thank u sir

Excellant