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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 di...
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Answered by Max M. • Chemistry tutor
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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 th...
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Answered by Dylan R. • Chemistry tutor
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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 equivalen...
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Answered by Harry D. • Chemistry tutor
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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 va...
BS
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What is the difference between a Bronsted Lowry acid and a Lewis Acid?

In chemistry there are two distinct theories to explain acid-base reactions; the Bronsted-Lowry and Lewis acid-base theories. The Bronsted-Lowry theory talks about removal or transfer of hydrogen ions (H+) i...
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Answered by Michael E. • Chemistry tutor
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