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Morphine has theformula C15H12NO3. It is a base and accepts one proton permolecu

ID: 76547 • Letter: M

Question

Morphine has theformula C15H12NO3. It is a base and accepts one proton permolecule. It is isolated from opium. A 0.681g sample of opium isfound to require 8.93mL of a 1.17×102 Msolution of sulfuric acid forneutralization. assuming the morphine is the only acid or basepresent, calculate the percent morphine inopium. Morphine has theformula C15H12NO3. It is a base and accepts one proton permolecule. It is isolated from opium. A 0.681g sample of opium isfound to require 8.93mL of a 1.17×102 Msolution of sulfuric acid forneutralization. assuming the morphine is the only acid or basepresent, calculate the percent morphine inopium.

Explanation / Answer

          Moleculer formula of Morphine is C15H12NO3        Molar mass ofMorphine = 15*12+12*1+14*1+16*3                                              =   180 + 12+ 14 +48                                               = 254 g                   Weight of opium   = 0.681 g        Morphine is isolated fromopium. Now opium is neutralized by 8.93 mL of1.17*10-2  M sulfuric acid solution.           So thenumber of moles present in sulfuric acid solution   n = molarity * Volume                                                                                                    = 1.17*10-2 mol/L *8.93*10-3 L                                                                                                     = 10.448*10-5 moles                                 Number of moles of opium = number of moles of sulfuric acidsolution                        that is number of moles of opium = no of moles of morphine.              So mass of morphine in opium = molar mass of Morphine *numberof moles                                                              = 254*10.448*10-5                                                                =0.0265gmol                                 The percentage of Morphine in opium is                                                                                 = (mass of Morphine in opium /total mass of opium)*100                                                                        =( 0.0265/0.681)*100                                                                         = 3.89 % .               The percentage of Morphine in opium is 3.89 % .                                                                =0.0265gmol                                 The percentage of Morphine in opium is                                                                                 = (mass of Morphine in opium /total mass of opium)*100                                                                        =( 0.0265/0.681)*100                                                                         = 3.89 % .               The percentage of Morphine in opium is 3.89 % .
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