Question

Calculate the theoretical Iodine Number of tristearin, triolein, trilinolein and trilinolenin, if their molar masses are 891 g/mol, 885 g/mol, 879 g/mol and 873 g/mol, respectively. The molar mass of iodine (I2) is 254 g/mol.

Answer 1

iodine number is the mass of iodine in grams that is consumed by 100 grams of a chemical substance.(a C=C double bond consume a iodine)

a) in  tristearin their is no C=C double bond so it dosnot consume ant iodine.

b) in triolein their is three C=C double bond so consumed three iodine.

1 mole of triolein consume 3 mole of iodine.

1 mole of triolein consume =127 x 3 grame of iodin.

=381 gram

885 g of triolein consume 381 gram of iodin.

100 g of triolein consume =(381 ÷885) x 100 =43.05

c) in trilinolein their is six C=C double bond so consumed six iodine.

1 mole of trilinolein consume 6 mole of iodine.

1 mole of trilinolein consume =127 x 6 grame of iodin.

=762 gram

879 g of trilinolein consume 762 gram of iodin.

100 g of trilinolein consume =(762 ÷879 ) x 100 =85.5

d) in trilinolenin their is nine C=C double bond so consumed nine iodine.

1 mole of trilinolenin consume 9 mole of iodine.

1 mole of trilinolenin consume =127 x 9 grame of iodin.

=1143 gram

873 g of trilinolenin consume 1143 gram of iodin.

100 g of trilinolenin consume =(1143 ÷873) x 100 =130.9