Top answers

Chemistry
A Level

How do ionic charge and radius affect lattice enthalpy?

As the charge of an ion increases, so does its charge density. The ion can therefore form stronger electrostatic forces of attraction, resulting in stronger bonds. As these bonds form to produce a lattice...

KF
43329 Views

How can an aldehyde be distinguished from a ketone?

An aldehyde will react with Tollen's reagent to form a characteristic silver mirror, whereas a ketone will not react. This is because an aldehyde can be oxidised to a carboxylic acid, reducing Tollen's re...

KF
4206 Views

Discuss the trend in first ionisation energies across the second period of the periodic table.

First of all we must appreciate the general trend in these ionisation energies. The will always be endothermic (takes in energy) since we must put energy into a system to overcome the strong electrostatic...

JE
Answered by Jake E. Chemistry tutor
12704 Views

Explain why the second ionisation energy of boron is higher than the first ionisation energy of boron.

Boron is the 5th element in the periodic table, and has an electron configuration 1s22s22p1. The first ionization energy of Boron is the energy required to remove the s...

AI
Answered by Adelina I. Chemistry tutor
35317 Views

Can you explain what stoichometry actually is and why the ratio is not the same as the number of moles?

Stoichiometry is just a way of relating two species that react, in a ratio. EXAMPLE: 1A + 2B -> 3C Now usually this would be written as A + 2B -> 3C but I've written the 1 to exaggerate the point. N...

MR
Answered by Michael R. Chemistry tutor
5288 Views

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