Chemistry
Explain Differentiation of the Arrhenius Equation
Arrhenius equation is used to calculate the rate of a reaction. It is an important part of chemical kinetics. It helps in understanding the effect…
Chemical Mathematics
Chemistry
How to Change in pH?
The pH of a solution in which the hydrogen ion concentration is [H] is defined by: pH = – log[H+] Firstly, show that d(pH)/d[H+] arising…
Chemistry
Intermolecular Interactions: Mathematical Solution
V = – 4 ε [(σ/r)6 – (σ/r)12] Question 1: The variables in the Lennard-Jones equation are V and r, Firstly, find the derivatives of…
Chemistry
Describe Intermolecular Interactions with Equation
The non-bonding interaction between two neutral atoms or two neutral molecules, their intermolecular interactions, is given by the Lennard-Jones equation. V = – 4 ε…
Chemistry
Measuring Rates of Chemical Reaction from Concentration Data
In a chemical reaction the concentration of a reagent [A] is found to decrease with time t as it is consumed to form products. A…
Chemistry
Explain Maxwell Boltzmann Distribution of Speeds of Gas Molecules
The fraction of identical molecules in a gas with speed c (ignoring the direction of the velocity) is f(c) and is given by the Maxwell…
Chemistry
Molecules of Gas: Mathematical Example
Question 1: Consider an N2 molecule at 298 K moving with a velocity of 515 m s-1. In the absence of any collisions, how long…
Chemistry
How to Calculate Vapour Pressure Data for Liquid?
The vapour pressure of the solvent above a liquid varies with temperature according to ln(p) = – [ΔHvap/ RT] + B where p is the…
Chemistry
Explain Pressure Volume Experimental Data for Carbon Dioxide
The volume, V litres, of one mole of CO2 gas was measured as the pressure of p atmospheres (atm) was varied at a constant temperature…
Chemistry
Explain Photoelectric Experimental Results
Light of various selected frequencies v was directed at a sodium metal target inside a vacuum system. The kinetic energy of the ejected electrons EKE…
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