When 2-phenylacetaldehyde is added dropwise to benzaldehyde in the presence of sodium hydroxide they undergo a crossed aldol rea
ction to form 3-hydroxy-2,3-diphenylpropanal?
1 answer:
Carbonyl Compounds containing alpha proton readily donates alpha acidic proton when treated with strong Base. In given statement <span>2-phenylacetaldehyde is converted into Enolate and Enolates acts as a nucleophile and attacks carbonyl group of Benzaldehyde. The mechanism of given reaction is as follow, the movement of electrons is shown by RED arrows,</span>
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Answer:
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The balanced chemical equation for showing hydrogen peroxide decomposing into hydrogen and oxygen is:
Answer:
The correct option is;
c. 0.167
Explanation:
The parameters given are;
The mean, μ = 13.9 Gigagrams/year
The standard deviation, σ = 5.8 Gigagrams/year
The z-score formula is given as follows;
Where:
x = Observed score = 11.5 Gigagrams/year
We have;
From the z-score table relations/computation, the probability (p-value) = 0.6605
Where:
x = Observed score = 14 Gigagrams/year
We have;
From the z-score table relations/computation, the probability (p-value) = 0.4931
Therefore, the probability, , that the amount of carbon emissions from cars in Belgium for a randomly selected year are between 15.5 Gigagrams/year and 14 Gigagrams/year = The area under the normal curve bounded by the p-values for the two amounts of carbon emission
Which gives;
= 0.6605 - 0.4931 = 0.1674 ≈ 0.167
Therefore, the correct option is c. 0.167.