For a reaction with ΔH° = −9 kJ/mol, decide if the following statement is true. If it is false, choose the statement that makes
1 answer:
Answer: c. The statement is true
Explanation:
Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and for the reaction comes out to be positive.
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and for the reaction comes out to be negative.
As the given value of , the heat is released and is exothermic.Thus the statement that the reaction is exothermic is true.
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Answer:
The possible structures are ketone and aldehyde.
Explanation:
Number of double bonds of the given compound is calculated using the below formula.
=Number of double bonds
= Number of carbon atoms
= Number of hydrogen atoms
= Number of nitrogen atoms
The number of double bonds in the given formula -
The number of double bonds in the compound is one.
Therefore, probable structures is as follows.
(In attachment)
The structures I and III are ruled out from the probable structures because the signal in 13C-NMR appears at greater than 160 ppm.
alkene compounds I and II shows signal less than 140 ppm.
Hence, the probable structures III and IV are given as follows.
The carbonyl of structure I appear at 202 and ketone group of IV appears at 208 in 13C, which are greater than 160.
Hence, the molecular formula of the compound having possible structure in which the signal appears at greater than 160 ppm are shown aw follows.
Answer:
Explanation:
Oxidation:
- Balance As:
- Balance H and O in acidic medium:
- Balnce charge:
......(1)
Reduction:
- Balance N:
- Balance H and O in acidic medium:
- Balance charge:
......(2)
gives-