Your Ultimate Chemistry Learning Destination
Your Ultimate Chemistry Learning Destination
SECOND LAW OF THERMODYNAMICS The Second Law can be expressed in several equivalent ways… Direction of Heat Flow (Clausius Statement): Heat flows from hot body to cold body. Heat cannot spontaneously transfer from a colder body to a hotter body without external intervention. This establishes the natural direction of thermal energy transfer. Kelvin-Planck Statement: It […]
Haber Process for Ammonia Manufacturing The Haber process is used to synthesise ammonia (NH₃) from nitrogen and hydrogen gases. It’s one of the most important chemical processes, which enabling the production of fertilizers. Chemical Reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g) (ΔH = -92 kJ/mol) The combination of atmospheric nitrogen with hydrogen to produce ammonia. […]
Catalytic properties of d – block elements: Catalytic properties of d- block elements are mainly due to the following reasons: 1.The presence of vacant d orbitals. 2.They have the ability to exhibit variable 3.They have a tendency to form complex compounds. Examples: Platinum (Pt): It is used as a catalyst in the manufacture of sulphuric […]
Chain isomerism : The structural isomerism in which compounds have the same molecular formula but differ in the arrangement of their carbon chains. This difference may be due to straight-chain or branched-chain structures.The carbon atoms are connected in a straight or branched way. Examples: 1.Butane (C₄H₁₀): n-Butane: CH₃–CH₂–CH₂–CH₃ (straight chain) and Isobutane: CH₃–CH(CH₃)–CH₃ (branched […]
ISOMERISM the phenomenon in which two or more compounds have the same molecular formula but differ in their physical and chemical properties.These compounds are known as isomers. TYPES OF ISOMERISM : Isomerism is broadly divided into two main categories: 1. Structural (constitutional) isomerism. 2. stereoisomerism. I. Structural Isomerism: Structural isomers have the same molecular […]
Correct answer :(C)orbit The Bohr radius is defined as the distance between the nucleus and the outermost electron in hydrogen atom in its ground state. It represents the distance between the nucleus and electron in hydrogen’s ground state (n=1), It approximately equal to 0.529 Å. Information about orbit : orbit represents a fixed circular […]
Correct answer :(4) Keto – enol tautomerism: It is an equilibrium between an aldehyde or ketone and a structural isomer called, the enol form. When acetylene reacts with water in presence of mercuric sulphate and Sulphuric acid, it initially converts into Vinyl alcohol which is present in enol form. The scene all form of vinyl […]
Correct answer : (2). Diborane reacts with water to give boric acid and hydrogen. B₂H₆ + 6 H₂O → 2 H₃BO₃ + 6 H₂. Formula of Boric acid is H₃BO₃, (it also written as B(OH)₃). Orthoboric […]
correct answer:(2) Structure of Diborane: The formula of diborane is B2H6.. Diborane consists of two boran Atoms connected by a bridge made of two bridges hydrogen atoms. Terminal Hydrogen Atoms: Each boran atom is bonded to two terminal […]
Answer : when Ethyl chloride reacts with KCN to form Ethyl cyanide, when which undergo hydrolysis to form propanoic acid. correct option: (1) It is the conversion of alkyl halides into carboxylic acids through cyanide formation followed by hydrolysis. When Ethyl chloride reacts with potassium cyanide (KCN) in alcoholic medium, it undergoes SN2 reaction to […]