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53. ASSERTION: Acetylene on treatment with alkaline KMnO4 produce acetaldehyde. REASON: Alkaline KMnO4 is a reducing agent

53. ASSERTION: Acetylene on treatment with alkaline KMnO4 produce acetaldehyde. REASON: Alkaline KMnO4 is a reducing agent

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer no. 53
stion Page 7 of 10 Previous Next Direction: In the following questions (QUESTIONS 49-53), a statement of ASSERTION is followed by a statement of REASON. Evaluate both statements. Then chose the answers from the options below. A- Assertion and reason both are correct statements and reason is the correct explanation for assertion. B-Assertion and reason both are correct statements but reason is not the correct explanation for assertion. C-Assertion is a correct statement but reason is a wrong statement. D-Assertion is a wrong statement but reason is a correct statement. 49. ASSERTION: Lower aldehydes and ketones are soluble in water but the solubility decreases as molecular mass increases. REASON: Aldehydes and ketones can be distinguished by Tollen's reagent. 50. ASSERTION: Aldehydes are more reactive than ketones. REASON: The carbonyl group in aldehydes is more electrophilic than that in ketones. 51. ASSERTION: Alkyl aldehydes are less reactive than aromatic aldehydes, such as benzaldehyde. REASON: The aromatic ring allows electron delocalization via a resonance effect that also reduces the positive charge on the carbonyl carbon. 52. ASSERTION: The addition of 1 mole of alcohol to an aldehyde gives a hemiacetal, and to a ketone a hemiketal REASON: Pormation of hemiacetals is usually catalyzed by acids, but also may be achieved in the presence of base. 53. ASSERTION: Acetylene on treatment with alkaline KMnO4 produce acetaldehyde. REASON: Alkaline KMnO4 is a reducing agent. 54. Why is ethanal incapable of forming a hydrogen bond with another ethanal molecule despite exhibiting a bond dipole in the C =0 bond? A. The oxygen atom is partially reactive due to the strong bond dipole. B. The carbon atom does not form a highly polar bond with hydrogen. C. The oxygen atom is sp² hybridized with almost 67% p character. n Ovunen avhikite raconance with rachon leading to hand stability
Transcribed Image Text:stion Page 7 of 10 Previous Next Direction: In the following questions (QUESTIONS 49-53), a statement of ASSERTION is followed by a statement of REASON. Evaluate both statements. Then chose the answers from the options below. A- Assertion and reason both are correct statements and reason is the correct explanation for assertion. B-Assertion and reason both are correct statements but reason is not the correct explanation for assertion. C-Assertion is a correct statement but reason is a wrong statement. D-Assertion is a wrong statement but reason is a correct statement. 49. ASSERTION: Lower aldehydes and ketones are soluble in water but the solubility decreases as molecular mass increases. REASON: Aldehydes and ketones can be distinguished by Tollen's reagent. 50. ASSERTION: Aldehydes are more reactive than ketones. REASON: The carbonyl group in aldehydes is more electrophilic than that in ketones. 51. ASSERTION: Alkyl aldehydes are less reactive than aromatic aldehydes, such as benzaldehyde. REASON: The aromatic ring allows electron delocalization via a resonance effect that also reduces the positive charge on the carbonyl carbon. 52. ASSERTION: The addition of 1 mole of alcohol to an aldehyde gives a hemiacetal, and to a ketone a hemiketal REASON: Pormation of hemiacetals is usually catalyzed by acids, but also may be achieved in the presence of base. 53. ASSERTION: Acetylene on treatment with alkaline KMnO4 produce acetaldehyde. REASON: Alkaline KMnO4 is a reducing agent. 54. Why is ethanal incapable of forming a hydrogen bond with another ethanal molecule despite exhibiting a bond dipole in the C =0 bond? A. The oxygen atom is partially reactive due to the strong bond dipole. B. The carbon atom does not form a highly polar bond with hydrogen. C. The oxygen atom is sp² hybridized with almost 67% p character. n Ovunen avhikite raconance with rachon leading to hand stability
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