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Degree of Unsaturation Calculator
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The task of drawing isomers for a particular formula can be made easier by comparing the number of hydrogen's with the number of carbons in the formula. Such a calculation allows the calculation of the degree of unsaturation.

Knowing the number of degrees of unsaturation in a molecule is useful because this number gives an indication of how many double bonds are present in an unknown compound.
Degree of Unsaturation Calculator calculates the total number of multiple bonds plus rings.Below is given a default molecule formula propadiene(C3H4), click on "Calculate Degree of Unsaturation" to calculate degree of unsaturation.
 

Steps for Degree of Unsaturation Calculator

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Step 1 :  

Read the probelm carefully and observe the number of double and triple bonds in the given compound.



Step 2 :  

Apply the formula to calculate the degree of unsaturation.


Degree of Unsaturation = (Total Number of Double Bonds) + (2 x Total Number of Triple Bonds) + (Total Number of Rings)



Problems on Degree of Unsaturation Calculator

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  1. Calculate the degree of unsaturation for the formula C8H13BrO.


    Step 1 :  

    The given molecular formula of the compound is C8H13BrO.



    Step 2 :  

    Br counts as an H and O can be ignored, so calculate as though the formula were C2H14.

    Degree of unsaturation = $\frac{1}{2}$ [(2)(8)+2-14] = 2



    Answer  :  

    The degree of unsaturation for the given compound is 2.



  2. Determine the degrees of unsaturation for the following structure.

    Tryptophan


    Step 1 :  

    The molecule given is tryptophan.



    1. Number of double bonds = 5

    2. Number of triple bonds = 0

    3. Number of rings = 2



    Step 2 :  

    Apply the formula.


    Degree of Unsaturation = (Total Number of Double Bonds) + (2 x Total Number of Triple Bonds) + (Total Number of Rings)


    Degree of Unsaturation = 5 + (2 $\times$ 0) + 2


    Degree of Unsaturation = 7



    Answer  :  

    The total degrees of unsaturation of the given molecule tryptophan is 7.



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