Answer to Question #102674 in General Chemistry for sakshi

Question

1.(a)Give an example for each of the following types of nuclear transmutation reactions: (p, α), (n, p), ( n, α) and (p, n). b) An analyst is asked to oxidize a secondary alcohol to ketone. What single characteristic feature in IR spectra should the analyst look for in order to verify the feasibility of the reaction?
c) Which of the following has higher λmax value?
1-butene or 1, 3 – butadiene. State the reason.

Answer 1

1) a) alpha decay

Equation 20.1: AZX→A−4Z−2X′+42αZAX→Z−2A−4X′+24α

beta decay

Equation 20.4: AZX→AZ+1X′+0−1βZAX→Z+1AX′+−10β

positron emission

Equation 20.7: AZX→AZ−1X′+0+1βZAX→Z−1AX′++10β

electron capture

Equation 20.10: AZX+0−1e→AZ−1X′+x-rayZAX+−10e→Z−1AX′+x-ray

gamma emission

Equation 20.15: AZX*→AZX+00γZAX*→ZAX+00γ

b) The carbon-oxygen double bond, C=O, is one of the really useful absorptions, found in the range 1680 - 1750 cm-1. Its position varies slightly depending on what sort of compound it is in. The other really useful bond is the O-H bond. This absorbs differently depending on its environment. It is easily recognised in an acid because it produces a very broad trough in the range 2500 - 3300 cm-1.

c) in 1,3 butadine has higher lmax. Because it has two chromaphor group.