Terephthalic acid, C8H6O4 is commonly used to make polyesters.Similar to acetic

Question

Terephthalic acid, C8H6O4 is commonly used to make polyesters.Similar to acetic acid(vinegar), each molecule of terephthalic acidcontains 2 acidic hydrogens. Answer the following questions basedon the information given .Molecular weight of terephthalic acid =166.09 g/mol. You may assume the density of the terephthalic acidsolution to be 1.00g/ml.
a) Suppose a solution of terephthalic acid has a concentrationof 20.00% (w/v%). Calculate the molarity of the solutionwith the corrext number of significant figures.
b) Calculate the normality (N) for the (w/v%)terephtalic acid solution with the correct number of sigfigs.
Hello! Step by step procedure to acquiring answers tothe above would be truly appreciated. Thank you!

a) Suppose a solution of terephthalic acid has a concentrationof 20.00% (w/v%). Calculate the molarity of the solutionwith the corrext number of significant figures.
b) Calculate the normality (N) for the (w/v%)terephtalic acid solution with the correct number of sigfigs.
Hello! Step by step procedure to acquiring answers tothe above would be truly appreciated. Thank you!

Explanation / Answer

   Mass of terepthalic acid in solution = 20/100 x 100 gms = 20gms    No. of moles of terepthalic acid = mass/molar mass = 20/166.09moles = 0.1204 moles    n-factor of terepthalic acid = 2 (since it has 2 acidicH+)        a) Molarity of solution = no. of moles/volume = 0.12/0.1 M =1.204 M       b) Normaltiy of solution = molarity x n-factor = 1.204 x 2 =2.408

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