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Chemistry
A Level

How do I balance redox equations in acidic reactions, without trial and error, using half equations?

Here is a summary on the steps to complete these question types. 

  1. Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balanc...
IK
Answered by Imaany K. Chemistry tutor
1957 Views

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 (1st IE). Thermodynamically, it is the enthalpy change when one mole of electrons is removed from a mole of gaseous atoms of ...

TF
Answered by Thomas F. Chemistry tutor
9263 Views

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, ...

GL
Answered by George L. Chemistry tutor
3826 Views

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...

AR
Answered by Alice R. Chemistry tutor
3781 Views

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 delocali...

TD
21833 Views

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