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Are exothermic reactions decomposition reactions or are they synthesis reactions?
Exothermic reactions can be both decomposition reactions (breaking down a compound into simpler substances) and synthesis reactions (forming a compound from simpler substances). The key factor that determines whether a reaction is exothermic is whether it releases heat to its surroundings.
What are all reactions in the body called?
Generally in a body two type of reactions take place, catabolic and anabolic. Catabolic reactions are the type of reactions in which bio-molecules in our body split into their constituents to release energy; while anabolic reactions are those reactions in which new bio-molecules are synthesized in our Body. Together both reactions are known as METABOLISM.
How many types of single-replacement reactions ar there?
There are three main types of single‐replacement reactions: metal‐displacement reactions, halogen‐displacement reactions, and nonmetal‐displacement reactions. Each type involves the substitution of one element in a compound by another element.
How many types of single-replacement reactions are there?
There are two types of single-replacement reactions: metal displacement reactions and non-metal displacement reactions. In metal displacement reactions, a more reactive metal displaces a less reactive metal in a compound. In non-metal displacement reactions, a more reactive non-metal displaces a less reactive non-metal in a compound.
Why are combustion reactions considered exceptions to the rules of chemical reactions?
Combustion Reactions are always reacted with Oxygen gas in this case if you had C3H8+O2 you will ALWAYS get H2O+CO2 it does not matter if you have C100H54+O2 you will still get H2O+CO2 this is why combustion reactions are considered exceptions to the rules of a product or chemical reaction.
What are the chemical tests to distinguish between cyclohexanol and phenol and what reactions are involved?
the difference between cyclohexane and cyclohexene is the difference between an alkane and an alkene. Add bromine water to both samples. cyclohexane will remain orange. cyclohexene will turn the orange solution colourless because bromine adds across the double bonds. Propanol gives effervescence of hydrogen with sodium metal, propanone does not. Propanone and 2-propanol answer iodoform test, 1-propanol does not Benzoic acid and propanoic acid gives effervescence of carbon dioxide with sodium bicarbonate, benzaldehyde and propanoic chloride does not.
Why benzaldehyde undergoes an autooxidation?
Benzaldehyde can undergo auto-oxidation due to the presence of an aldehyde group, which is susceptible to oxidation reactions. The aldehyde group in benzaldehyde can be easily oxidized to form benzoic acid in the presence of air or oxygen.
Schiff base of aniline and benzaldehyde?
The Schiff base formed from aniline and benzaldehyde is N-phenylideneaniline. This compound is a imine derivative and is commonly used in organic synthesis reactions. It is formed by the condensation of aniline and benzaldehyde in the presence of a suitable catalyst.
Give a reaction mechanism for iodoform reaction using propanone?
In the iodoform reaction using propanone, the methyl ketone group of propanone undergoes halogenation and substitution reactions with iodine and sodium hydroxide. The mechanism involves formation of the enolate ion, followed by a nucleophilic attack of the iodine ion to yield iodoform as the final product.
Why iodobenzene cannot be prepared by Gattermann reaction?
The Gatterman reaction is used to convert benzene to benzaldehyde (and derivatives). You need to use the Sandmeyer reaction to add iodo groups to aromatic rings. I think textbooks sometimes gets the two reactions mixed up.
Effect of conjugation in the frequency of absorption of carbonyl group for cinnamaldehyde and benzaldehyde as compared to n-butyraldehyde?
Aldehydes are highly reactive and participate in many reactions.[8]" From the industrial perspective, important reactions are condensations, e.g. to prepare plasticizers and polyols, and reduction to produce alcohols, especially "oxo-alcohols." From the biological perspective, the key reactions involve addition of nucleophiles to the formyl carbon in the formation of imines (oxidative deamination) and hemiacetals (structures of aldose sugars).[8]
What is the reagent to distinguish alkene and alkyne?
Bromine in water or bromine water can be used to distinguish between an alkene and an alkyne. Alkenes will decolorize bromine water by undergoing addition reactions, while alkynes will not react under normal conditions and will not decolorize bromine water.
How can you convert sodium propanoate to ethane?
Sodium propanoate cannot be directly converted into ethane. Ethane is a simple hydrocarbon (C2H6), while sodium propanoate is a salt of propanoic acid. You would need a series of complex chemical reactions involving multiple steps to convert sodium propanoate into ethane.
Distinguish between the light and dark reactions of photosynthesis?
Chlorophyll in dark habitats contain less enymes than in lighter areas so the reaction time of photosynthesis is increased by the rate of chloroplasts per ribasone.
How will you prepare hexyne from ethyne?
1. Explain with suitable examples: a) Both chlorobenzene and chloroethene do not undergo substitution reactions under ordinary conditions with NaOH. b) Carbonyl group of benzaldehyde is less reactive towards nucleophilic addition reactions than the carbonyl group of ethanal. 2. Write the product (s) and mechanism for the following reactions: (5) 3. How would you carry out following conversions? a) Ethene to oxirane b) Benzyl magnesium chloride to 3-phenylpropanol c) Propene to glycerol d) Benzaldehyde to 3-phenylpropenoic acid e) Ethanol to trichloromethane (5) 4. a) How would you differentiate between different classes of alcohols? b) Give two reduction methods which can convert a carbonyl compound to an alkane.
How do you distinguish 2-methyl-3-nitrobenzoic acid from3-methyl-2-nitrobenzoic acid?
Looking at the structure, the methyl group is closer to the carboxylic acid group on2-methyl-3-nitrobenzoic acid, while the nitro group is closer to the carboxylic acid group on 3-methyl-2-nitrobenzoic acid.
Contrast endothermic and exothermic reactions?
Endothermic reactions are chemical reactions that use heat as part of the reactant. Heat is absorbed into the reaction in order for it to continue. Exothermic reactions are chemical reactions that release heat as a product of the reaction.
