Monday, January 16, 2017

Weak Base – Strong Acid Titration Curves

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The titration of a weak base (NH 3 ) with a strong acid (HCl) is shown below. Note that the curve has the same shape as the weak acid-stron...
Wednesday, January 4, 2017

Why Warm Water Freezes Faster Than Cold

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Nearly 50 years ago, Erasto B. Mpemba and Denis G. Osborne reported that if samples of water at 90 °C and 25 °C are cooled, the one start...
Tuesday, February 9, 2016

Relative Acidities Of Alcohols - In Aqueous Solution

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Alcohols have acidic character as the react with active metals like sodium or potassium liberating hydrogen. For example, C 2 H 5 OH +...
Friday, February 5, 2016

Phenyl Radical - Structure And Reason For Reactivity

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The group derived by loss of an H from benzene is a phenyl group abbreviated Ph. The phenyl radical ( C 6 H 5 · ) is the prototypi...
Monday, January 25, 2016

Purpose Of The Salt Bridge

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This explanation makes reference the Zn/Cu 2 + cell shown above. The cell cannot operate unless the circuit is complete. The ...
Sunday, January 24, 2016

Partition Coefficient - What's The Numerator?

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The process of a solute dissolved in one solvent being pulled out, or “extracted” into a new solvent actually involves an equilibrium proce...
Saturday, January 23, 2016

Electronic Configuration – d-block Elements and Ions

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The electronic configurations of the first row d-block elements are given in the table below, along with those for the M 2+ and M 3+ ions...