The compound with mol. Mass 180 is acetylated with CH_(3)COCl to get acetylated compound with mol. Mass 390. The number of amino groups present per molecule of the compound is

The compound with mol. Mass 180 is acetylated with CH_(3)COCl to get a

1.	The compound with mol. Mass 180 is acetylated with CH_(3)COCl to get acetylated compound with mol. Mass 390. The number of amino groups present per molecule of the compound is
Answer» 2 5 4 6 Solution :`R - NH_(2) + ClCOCH_(3) rarr R - NHCOCH_(3) + HCl` The INCREASE in mass PER acetyl group = 42 AMU Total increase in mass `= 390 - 180 = 210` `:.` The number of acetyl groups ADDED `= (210)/(42) = 5`