A certain mass of a substance in 100 g of C_6H_6lowers the f.p. by 1.28^@C. The samemass of the substance in 100 g of water lowers the f.p. by 1.395^@C . If the substance has a normal molecular weight in C_6H_6and is completely dissociated in water, calculate the number of moles of ions produced by the dissociation of 1 mole of the substance in water. K_f for H_2O and C_6H_6are 1.86 and 5.00 respectively.

A certain mass of a substance in 100 g of C_6H_6lowers the f.p. by 1.2

1.	A certain mass of a substance in 100 g of C_6H_6lowers the f.p. by 1.28^@C. The samemass of the substance in 100 g of water lowers the f.p. by 1.395^@C . If the substance has a normal molecular weight in C_6H_6and is completely dissociated in water, calculate the number of moles of ions produced by the dissociation of 1 mole of the substance in water. K_f for H_2O and C_6H_6are 1.86 and 5.00 respectively.
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