The path of ions after deflection depends on... a- only the mass of the ion b-on

Question

The path of ions after deflection depends on...

a- only the mass of the ion

b-only the charge on the ion

cc-both the charge and the mass of the ion

d-neither the charge nor the mass of the ion

Which of the following species will be deflected to the greatest extent?

a-37Na+

b-35Na+

c-37Nam

d-35Na2+

Which one of the following statements about the mass spectrum of CH3Br is correct?

a-the last two peaks are of equal size and occur at m/z values of 94 and 96
b-the last two peaks have abundances in the ratio 3:1 and occur at m/z values of 94 and 96
c-there is just one peak for the molecular ion with an m/z value of 95
d-there is just one peak for the molecular ion with an m/z value of 44

Which one of the following pieces of information cannot be obtained from mass spectrum?

a-the molecular mass

b-base peak

c-isotopic abundance

d- C=S stretching

To check that a secondary alcohol has been completely oxidized to a ketone you can...

a-check that the IR spectrum has absorptions at 3500cm-1 and 1650cm-1
b-check that the IR spectrum has no absorption around 3500cm-1
c-check that the IR spectrum has no absorption around 1650cm-1
d-check that the IR spectrum no absorptions at 3500cm-1 and 1650cm-1

Explanation / Answer

Q1) c-both the charge and the mass of the ion (the path depends on the m/z value)

Q2) d-35Na2+ ( it has the smallest m/z value)

Q3) a-the last two peaks are of equal size and occur at m/z values of 94 and 96

Q4) d- C=S stretching

Q5) b-check that the IR spectrum has no absorption around 3500cm-1

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