3. What is the oxidation number of any element in the free or uncombined state? a. 0 C. -1 b. +1 d. +2 4. What is the sum of the oxidation number of NO2? a. 0 C. -1 b. +1 d. +2 5. What is the oxidation number of Zinc in ZnH₂? a. 0 C. -1 b. +1 d. +2

Q: b) OH OH

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

Q: Group

A: Dear student I have given answer to your question in the image format.

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Q: E LEFT ALONE

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Q: 1 HO oi O

A: The given reaction is nucleophilic substitution reaction. This is SN1 reaction.This reaction…

Q: NO2 H2 (excess) cat. Pd/C O,

A:

Q: What is gravimetric analysis? Group of answer choices Density measurement Mass measurement…

A: Gravimetric analysis is a quantitative method of chemical analysis that involves the determination…

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A: Stork enamine alkylation: Stork enamine is an addition reaction of the unsaturated carbonyl…

Q: ||| 1. Br₂ (1er). 2. O₂, Pd/c Me öH

A: Alkynes undergo electrophilic addition reaction

Q: Lable as true/false, if false change underline statement

A:

Q: 1. LiAlH4 2. Neutralizing work-up Select to Draw O Q NaCN, HCI Select to Draw

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A:

Q: its incorrect

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Q: Question 1 Which of the following is the least active metal? O A OD O B

A: Ans  is  c because its not give reaction with steam and room temperature with water and not observed…

Q: Row two is incorrect

A: Sulfuric acid, H2SO4 when dissolved in water dissociates into cation and anion.

Redox Reactions

Redox reactions are considered to be the chemical reactions involving both oxidation and reduction processes. They are actually oxidation-reduction reactions. The term redox is made from two words where “red” comes from reduction and “ox” comes from oxidation. During a redox reaction electron transfer takes place in such a way that one chemical compound gets reduced and the other one gets oxidized.