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How to formulate and balance a redox equation under acidic conditions

In a reaction between MnO 4 - and Fe 2+ we are told MnO 4 - goes to Mn 2+ and Fe 2+ goes to Fe 3+ . We then need to derive the redox equation for the reaction occuring. First we need to idenfity which specie...
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Answered by Kiera D. • Chemistry tutor
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Why do ionisation energies increase across a period?

It's experimentally observed that ionisation energies have a general increase as one moves across the period: the first ionisation energy of lithium is ~500 kJ mol‑1, whereas that of neon is over 2000 kJ mol...
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Answered by Tom D. • Chemistry tutor
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What's the difference between Aliphatic and Aromatic Molecules?

Aromatic compounds contain a ring-structre e.g. Benzene whereas Aliphatic molecules have a straight chain structure e.g. Butane.
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Answered by Ruth W. • Chemistry tutor
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Explain why fluorine is more reactive than chlorine.

There are three things to consider every single time relative reactivity is unknown: atomic radius, shielding, and number of electrons. The reactivity is the halogens ability to gain an electron, so number o...
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Answered by Steven A. • Chemistry tutor
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Explain how pH changes can be minimised using a mixture of a weak acid and it's conjugate base

This mixture of a weak acid (HA) and it's conjugate base (A - ) acts as a buffer . A buffer is a solution with a highly stable pH. On addition of small amounts of either a strong acid or a strong base, this ...
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Answered by Cora T. • Chemistry tutor
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