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Alex_Xolod [135]
4 years ago
6

If a non-cyclic alkane shows a molecular ion peak at m/z 3.80 × 102, what is the chemical formula?

Chemistry
1 answer:
soldier1979 [14.2K]4 years ago
4 0
The General Equation of Alkane is as follow,

                                              CnH₂n₊₂          ------- (1)
As m/z = 380
So,
                                              CnH₂n₊₂  =  380
Or,
                                              12n+ 1₂n₊₂  =  380

                                              12n+ ₂n ₊ ₂  =  380

                                              14n ₊ ₂  =  380

                                                   14n  =  380 - 2

                                                   14n  =  378

                                                       n  =  378 / 14

                                                       n  =  27
Now, putting value of n in eq. 1

                                              C₂₇H₍₂₇ₓ₂₎₊₂

                                                  C₂₇H₅₆
Result:
           n  =  C  =  27

           y  =  H  =  56
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