Chemistry
Define and Describe on Electron Affinity
The electron affinity of an element may be defined as amount of energy which is released when an extra electron enters the valence orbital of…
Qualitative Chemistry
Chemistry
Atomic Orbitals
The wavefunctions for the 2px and 2py atomic orbitals for the H-atom can be written as, Notice that the 2px and 2py atomic orbitals only…
Chemistry
Quantum Chemistry
Question: In the quantum mechanics of electrons, atoms, molecules, or ions; chemists make use of wavefunctions ψ. The reason is that the value of the…
Chemistry
What is Enzyme Reaction Kinetics?
The rates of enzyme reactions literally determine our health and well-being, it is extremely important both personally and industrially (the pharmaceutical industry). Adenosine triphosphate (ATP)…
Chemistry
Ionization of He
Question: Above Figure shows a stainless steel source of a mass spectrometer which is inside a vacuum chamber at a pressure of about 10-10 atm.…
Chemistry
What is Heat Capacity of Solid lead?
The thermodynamic properties of solids and liquids are accurately modelled by the Shomate equation. For solids the Shomate equation is, Where Cp is in J…
Chemistry
Nonlinear Least squares Curve fitting
There are many equations and laws in Chemistry which may be plotted in Nonlinear Least squares Curve fitting linear graphs, as well as the obvious y=…
Chemistry
Arrhenius Plot
Question: Figure shows the experimental data from a student lab experiment to measure the first-order rate constant of a chemical reaction against temperature. The Arrhenius…
Chemistry
What is the visible Spectrum of Lodine?
The I2 molecule absorb at the red-end of the visible spectrum of lodine and thus appears bluish-purple. Figure shows the visible absorption spectrum of lodine…
Chemistry
Enthalpy of Fusion of n-Carboxylic Acids?
Figure shows the enthalpy of fusion ∆H fusion of four linear saturated n-carboxylic acids as a function of n the number of carbon atoms in…
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