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The following equilibrium is set up in a glass syringe. 2(NO2) (brown gas) ‹-› N2O4 (colourless gas) ∆H = -58 kJmol-1. Using le Chatelier's principle, predict and explain how heating up the mixture would affect it's appearance.

At first this question can seem confusing, but by breaking it down we can better understand what we are being asked to do. Firstly, we need to recall le Chatelier's principle - that an equalibrium will shift...
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Answered by Robert S. • Chemistry tutor
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Briefly describe the concept of electronegativity and explain why CCl4 is a non-polar molecule

Electronegativity is the tendency of an atom to attract a pair of electrons in a covalent bond. The Pauling scale assigns values to this tendency for each element in the periodic table ranging from the lowes...
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Answered by Samora S. • Chemistry tutor
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Please give the definition of Le Chatilier's principle. Use this to explain what would happen if you increased the temperature of an equilibrium in which the forwards reaction is exothermic.

Le Chatilier's principle states that, if a change is made to a system at equilibrium, the position of equilibrium will shift to oppose that change. If you increase the temperature of a system where the forwa...
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Answered by Sam W. • Chemistry tutor
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Differences between Sn1 and Sn2 reactions

--> Sn 2 : It is a one-step mechanism which is considered to be Sn 2 where two species are involved in the rate determining step. Both species account for the overall rate of the reaction where the rate e...
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Answered by Lucy S. • Chemistry tutor
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How does fractional distillation work?

Fractional distillation separates the different molecules in a crude oil mixture because of their differences in boiling points. A fractional distillation column is heated at the bottom and gets progressivel...
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