A new class of exceptionally effective catalysts have been isolated by a team of Boston College and MIT scientists, opening up a vast new scientific platform to researchers in medicine, biology and materials.
The new catalysts can be easily prepared and possess unique features never before utilised by chemists, according to findings from a team led by Amir H Hoveyda, professor at Boston College and MIT professor and Nobel laureate Richard Schrock, who shared the 2005 prize in Chemistry... Read Full Story
A key principle of analytical chemistry is the use of reagents to react chemically with a target analyte and through physically observable changes generate quantitative or qualitative information. One of the best known of these reagents is litmus, a dye derived from natural sources that turns from blue to red in the presence of acids. The term â litmus testâ has entered the language as a colloquial saying. On the other hand, the reaction between iron salts and the extract or tincture of... Read Full Story
For this experiment, six test tubes were placed on a rack, labeled, and filled with the following samples: a 1cm by 2cm strip of copper, a piece of aluminum wire (cleaned with sandpaper), a piece of tinfoil, a piece of iron wire (cleaned with sandpaper), a piece of magnesium, and a piece of zinc. 5 mL of a 6M solution of hydrochloric acid was quickly added to each sample, the relative rates of hydrogen evolution were observed, and the six metals were arranged in order of their chemical... Read Full Story
Procedure:br /ol
liUse litmus paper to determine if the dilute ammonia is an acid or base.
Record your results in the data table below.
/li
liUse litmus paper to determine if the soft drink is an acid or base. Record
your results in the data table below./li
liApproximately half-fill a test tube with the colorless soft drink and add 2-3
drops of phenolphthalein./li
liAdd dilute household ammonia one drop at a time until ONE drop turns the
soft drink barely pink. The pink color... Read Full Story
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