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Chemistry
A Level

How does the mechanism for electrophilic addition work?

First we must consider what an elecrophile is. An electrophile is a molecule or ion which is attracted to (and accepts electrons from) electron dense regions in other molecules, because it is positively c...

AR
8563 Views

Explain why the enthalpy of lattice dissociation of potassium oxide is less endothermic than that of sodium oxide. ( 2 Marks)

It is important with any exam question to decide what you think is required to achieve each individual mark. In this question, I'd read it and decide that the two marks are for: 1) Describing the relevant...

MM
Answered by Max M. Chemistry tutor
4987 Views

What would the ideal conditions for the Haber process (nitrogen + hydrogen to ammonia) be? Why are the ideal conditions not used in industry?

The Haber process is an example of a reversible reaction where the reactants react to form the product and simultaneously the product reacts back to form the reactants. As a reversible reaction progresses...

DR
Answered by Dylan R. Chemistry tutor
48261 Views

Explain, in terms of frequencies, why solutions of transition metal ions are often coloured.

Transition metal ions have partially filled d sub-shells. These shells split into two levels and the electrons in the lower levels can be excited to the higher ones by absorbing an amount of energy equiva...

HD
Answered by Harry D. Chemistry tutor
2818 Views

What key factors would you use to analyse a high resolution proton NMR spectrum

Fisrt you would use the chemical shift data of the main peaks, this gives you an idea of the chemical environment of the hydrogen atom that caused this peak. A more downfield signal (higher chemical shift...

BS
1684 Views

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