PCC- PYRIDINIUM CHLOROCHROMATE IS AN OXIDIZING AGENT.
OTHER THAN PCC ALL ARE REDUCING AGENT.
E IS THE CORRECT ANSWER
2. Which of the following is not a reducing agent? A. NaBH4 B. LiAlH4 C. H2Ni...
6. Which one of the following compounds is not an Oxidizing agent? PCC LiAlH4 03 KMnO4 H2Cr04 A B С D E 7. Which one of the following carbocations will rearrange? + Ph st Ph A B С D E
Which will Acetals react with? A. LiAlH4 B. NaBH4, CH3CH2OH C. RMgBr D. H3O+ E. Acetals will react with all of the above reagents
+ lidt 6) How would you perform the following transformation? OCH CHE A) NaBH4 B) LiAlH4 C) 1. DIBAL-H 2. H20 D) 1. SOCI2 2. LiAlH(O-1-Bu)3 7) What reagent can be used to convert 2-methylbutan-1-ol into 2-methylbutanal? A) LiAlH4 B) Na2Cr207 C) 03 D) KMnO4 E) PCC 9) Show how you would perform the following synthesis. A) 1. 03 2. (CH3)2S B) KMnO4, cold, basic C) Os04 D) 1. mCPBA 2. potassium dichromate 25) Provide a detailed, stepwise mechanism for...
Which of the following statements justifies why LiAIH, is a more powerful reducing agent than its isoelectronic counterpart NaBH4? NaH is a strong nucleophile, meaning the direct attachment of the hydride to the sodium ion will make the hydride more nucleophilic like LiAlH4. The dipole moment of LiAIHs is higher than that of NaBHa, making its hydride more nucleophilic. NaBH4 is just as much of a strong reducing agent, with the ability to reduce a nitrile to a primary amine....
Which one of the following items does not characterize a reducing agent? a. A reducing agent loses electrons. b. A reducing agent causes another species to be reduced. c. The oxidation number of a reducing agent increases. d. A good reducing agent is a metal in a high oxidation state, such as Mn7+. e. An example of a good reducing agent is an alkali metal, such as Na.
Question 2 (1 point) Reaction conditions for the use of NaBH4 and LiAlH4 as reducing agents are different. LiAlH4 is the more difficult to handle. Explain why it reacts violently with water can't be used in the open air needs special anhydrous solvent all the above Question 1 (1 point) What class of compound do you always get if you reduce an aldehyde? O 2º alcohol carboxylic acid ketone 1° alcohol
Which of the following is the strongest reducing agent? A) Fe2+(aq) B) Fe3+(aq) C) Cd(s) D) F-(aq) E) Na(s) . Which of the following is the weakest oxidizing agent? A) Cu+(s) B) Fe2+(aq) C) Sn4+(aq) D) K+(s) E) Cr3+ (aq) Which of the following is the weakest reducing agent? A) Al(s) B) K(s) C) Ba2+(aq) D) A13+ (aq) E) F-(aq) Determine which of the following pairs of reactants will result in a spontaneous reaction at 25°C. A) Pb2+ (aq) +...
Label the following mixtures as: a. LiAlH4 b. NaBH4 c. -Cl, -Br, -I d. -COOH, -NO2 e. -NH2, -O-CH3 f. Br2/FeBr3 g. Br2 Solution h. Lucas Test i. 2,4-DNP j. Tollen's Reagent nucleophilic substitution bromination mixture electrophilic addition bromination mixture m- directing deactivating groups electrophilic substitution bromination mixture selective hydrating reagent indicates the existence of carboxylic groups 0-, p- directing activating groups indicates the existence of aldehydic groups non selective hydrating reagent 0-, p- directing deactivating groups indicates the existence...
write three reaction in the synthesis of alcohols, aldehydes and ketones using the reducing agent LiAlH4
1. When Sn + Pb2+ reacts to form Sn2+ + Pb what is the reducing agent? a. Pb2+ b. Sn c. Pb d. Sn2+ 2. When an element or ion gains electrons it is said to be a. destroyed b. reduced c. the reducing agent d. oxidized