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Describe and explain the trend in first ionisation energy down group 2 of the periodic table.

Firstly, we must consider the definition of first ionisation energy (1 st IE). Thermodynamically, it is the enthalpy change when one mole of electrons is removed from a mole of gaseous atoms of a particular ...
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Answered by Thomas F. • Chemistry tutor
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Explain why fluorine is reactive

Fluorine is a halogen, these group 7 elements are reactive because they require just 1 additional electron to achieve a noble configuration. Fluorine is the smallest halogen, and so its outer electrons are c...
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Answered by George L. • Chemistry tutor
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How do you answer a questions on how a buffer solution works?

This question would be a 5/6 mark question- marks are displayed throughout You always start by defining what a buffer solution is: A buffer solution is a system that minimises a change in pH on the addition ...
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Answered by Alice R. • Chemistry tutor
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Explain why Phenol is more reactive than Benzene with bromine water.

To answer this we must look at the structure of both. Phenol has an OH group attached whilst benzene has no side groups. The OH is electron donating, the P orbital on the Oxygen overlaps with the delocalised...
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Describe the conditions used in the Haber Process and explain briefly why they are used.

The forwards direction of the Haber Process is exothermic, thus in accordance with La Chatelier's Principle a lower temperature will lead to an increased yield of ammonia. However a low temperature will lead...
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Answered by Ella M. • Chemistry tutor
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