Chemistry
Experimentally Determining of the Order of a Chemical Reaction
The rate of a chemical reaction depends upon the rate constant and the concentrations of the reagents and products each raised to a power, the…
Logarithm
Chemistry
Experimental Arrhenius Plot: Mathematical Example
k = Ae-(Ea/RT) Firstly, using the following experimental data for the rate constants and temperatures draw a graph of ln(k/s-1) versus (1/T) x (103 K)…
Chemistry
What is Radioactive Decay?
Radioactive decay is a first-order chemical reaction which follows an exponential decay in the reactant, the radioactive element. Starting with an original number of radioactive…
Chemistry
How Chemical Work at Constant Pressure?
Chemical Work at Constant Pressure The ability of a chemical reaction to perform work at a constant pressure is given by the Gibbs energy AG°…
Chemistry
Explain Nernst Equation
The following redox chemical reaction Zn(s) + Cu2+ → Zn2+ +Cu(s) can be made into an electrochemical cell to derive electrical energy, below Figure. The…
Chemistry
Explain Arrhenius Equation
Question 1: The rate constant k of a chemical reaction increases with the absolute temperature T. This increase follows the equation below which is called…
Chemistry
First Order Kinetics: Mathematical Example
Question 1: The concentration of the reactant in a first-order chemical reaction decreases with time as it is consumed to form products and the concentration…
Chemistry
Explain Acid Base Equilibrium
Question 1: The molar concentration of OH– ions in a certain solution is 1.04 x 10-5 mol L-1. Calculate the pOH and then the pH of…
Mathematics
What is Logarithm?
bc = a, b must be greater than 1 then c = logb (a) We say that c is the logarithm to the base b…