-->

Organic Chemistry – Some Basic Principles And Techniques

Question
CBSEENCH11007644

0.15 g of iodoform gave 0.2682 g of silver iodide. Calculate the percentage of iodine.

Solution

Mass of the compound  = 0.15 g,   Mass of silver iodide = 0.2682 g
The molecular mass of silver iodide. 
              (Ag I) = 108 + 127 = 235
              AgI space identical to space straight I
235g of AgI contains  = 127 g of iodine
 therefore space space 0.2682 space straight g space of space AgI space contains space equals space 127 over 235 cross times 0.2682
therefore space space Percentage space of space iodine space equals space fraction numerator 127 space cross times space 0.2682 over denominator 235 space cross times space 0.15 end fraction cross times 100 space equals space 96.6