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Chemistry
A Level

How can you tell if a reaction is feasible and what factors contribute towards this?

A reaction is said to be feasible or spontaneous when the Gibbs Free Energy (Delta G) of the reaction is <0. Conversely, when the Gibbs Free Energy (Delta G) of the reaction is >0,...

Answered by Jamie R. Chemistry tutor
12492 Views

Explain why there is a general increase in the first ionisation energy across the third period.

The first ionisation energy depends on:the charge on the nucleus, the distance of the outer electron from the nucleus, the amount of shielding by inner electrons and whether the electron is alone in an or...

Answered by Mara P. Chemistry tutor
5422 Views

Describe how you would distinguish between separate samples of the two 2 0 4 stereoisomers of CH3CH2CH2CH2CH(OH)CN [2 marks]


(Plane) polarised lightEnantiomers would rotate light in opposite directions
ill explain in more detail.

Answered by Aitisam J. Chemistry tutor
8845 Views

How do you describe the process of recrystallisation to purify a product?

When describing the process of recrystallisation, it is important that every step is mentioned. Firstly, the impure product must be dissolved in a minimum amount of hot solvent. The hot s...

Answered by Chris R. Chemistry tutor
8794 Views

Propane and Chlorine react in the presence of UV light to give 2-chloropropane and HCl. Estimate the enthalpy change of this reaction using the following bond enthaplies (KJ/mol) : C-H=+413, Cl-Cl=+243, C-Cl=+346 and H-Cl=+432.

  1. Write equation, ensuring both sides are balanced.CH3CH2CH3 + Cl2 → CH3CH(Cl)CH3 + HCl (2.) Draw structural formula of all reactants ...
Answered by Jasmine W. Chemistry tutor
27730 Views

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