1) Calculate the degree of unsaturation for C1HeCIBro. SHOW CALCULUATION FOR FUL
ID: 558861 • Letter: 1
Question
1) Calculate the degree of unsaturation for C1HeCIBro. SHOW CALCULUATION FOR FULL CREDIT 2) Which one of the following compounds is consistent with the mass spectrum below? A) (CHsCH CHa).CH B) CHsCH:CHOHCH:CH:CHs C) (CHsCH CH22O D) (CHsCH:CH)NH Go 10 20 30 4050 60 70 8090 100 110 m/z 3) Which of the m/z values correspond to the molecular ion for the following compound? OH Provide a molecular formula that is consistent with the following mass spectrum data. M.. at m/r: 167, relative height-50.0% (M+1)" at me. 168, relative height-4.4% 4)Explanation / Answer
1. Degree of Unsaturation for C11H8ClBrO is 7.
In saturated hydrocarbons the maximum number of h atom is 2C + 2. The unsaturation or cyclization reduces the number of H atoms also known as degree of unsaturation or double bond equivalence. It can be calculated by
Degree of Unsaturation = (2C+2+NXH) / 2 or C + 1 +N/2 –X/2 –H/2
For C11H8ClBrO;
Degree of unsaturation = 11 + 1 -2/2 -8/2 = 12 – 5 = 7
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