Question: If E° for copper electrode is +0.34 V, how will you calculate its emf value when the solution in contact with it is 0.1 M in copper ions? How does emf for copper electrode change when concentration of Cu2+ ions in the solution is decreased? Solution: The emf of an electrode when dipped in […]
E° for copper electrode is +0.34 V, how will you calculate its emf value? Read More »
Molar conductivity increases with increase in volume and when volume increases the concentration of solution decreases (because no.of ions in the solution decrease) which makes the solution dilute. On dilution when concentration approaches zero, the molar conductivity is known as limiting molar conductivity. In case of strong electrolytes the ionisation is easy and
How can you determine limiting molar conductivity for strong and weak electrolyte? Read More »
Solution: Given, [A]=0.1 mol L-1, [B]=0.2 mol L-1, k = 2.0×10-6 mol-2 L2 s-1Rate =k[A][B]2 = (2.0x 10-6 ) x (0.1 mol L-1) x (0.2 mol L-1) 2 = 8.0 x 10-9 mol-2 L2 s-1. The concentration of A is reduced to (0.1 – 0.06) = 0.04 mol L-1.Now according to the equation 1 mole of A reacts with 2 mole of B. So, 0.04
Calculate the initial rate of reaction. Read More »
Let x g of each gas is mixed. Molar mass of ethane = 30 g/mol Molar mass of hydrogen = 2 g/mol Mole = Given mass/Molar mass Moles of ethane = (x/30) mol Moles of hydrogen = (x/2) mol So, the fraction of total pressure exerted by hydrogen
Amine is a type of compound that is derived from ammonia, i.e., NH3. We can simply say, that amines are derivatives of ammonia. We study about amines in Organic Chemistry, and they are basically classified as functional groups or organic nitrogen compounds that contain a nitrogen atom with a lone pair. Generally, in amines, hydrogen
Distinguish b/w ethyl amine and diethyl amine? Read More »
Thermodynamics is the study of flow of heat between system and surrounding. It deals with energy changes accompanying all types of physical and chemical processes. Thermodynamics helps to lay down the criteria for predicting feasibility or spontaneity of a process, including a chemical reaction, under a given set of conditions. It also helps to determine
Thermodynamics: A Basic Introduction Read More »
Solution: Bond angle is inversely proportional to electronegativity of substituents. i.e., Electronegativity of side atom increase then the bond angle (X-P-X) decreases. So, X-P-X or F-P-F bond angle is least in POF3. That’s why the O-P-F is maximum. Hence, the correct order of bond angle for O-P-X in the given molecules
What is the correct order of bond angle for O-P-X in the given molecules? Read More »
Tip: To know the acidic character of haloform, we have to look for the stability of conjugate base What is acidic character? Acidic character is the ability to or a tendency to lose a proton and form a stable conjugate base. Factor acidic character depends Acidic character of the acid depends upon the stability of
Acidic character of Haloform Read More »
What is acidic character? Acidic character is the ability to or a tendency to lose a proton. Carboxylic acid is highly acidic in nature. Factors responsible for acidic character (acidity) Inductive effect Mesomeric effect Hyperconjugation effect Ortho effect (especially for benzoic acid) Dependency of acidity on the above effects Acidity is directly proportional to -I, -M,
Arrange the following in acidic character Read More »
