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The key to answering any moles calculation question in chemistry is working out which equation you need to use. Generally, if moles are involved it will be moles = volume x concentration or moles = mass/R...
The enthalpy change of hydrogenation of benzene was shown to be less exothermic than 3 times that of hexene, therefore meaning that benzene does not contain three double bonds. X-ray imaging showed that b...
In cyclohexa-1,3,5-triene the molecule has 3 single bonds and 3 double bonds where all the electrons are localised. As a result the energy needed to hydrogenate cyclohexa-1,3,5-triene is (3x -120kJ/mol) =...
IonicCovalentMetallicIonic bonding The electrostatic attraction between positive and negative ions Covalent bonding Electrostatic attraction between a shared pair of electrons and the nuclei <...
Presence of:H2: Squeaky Pop Test: use a lit split to light a small sample of gas in a test tube. If Hydrogen, then a Squeaky pop will occur. O2: Glowing Splint Test: Add a still glow...
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