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Chemistry
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What is the name of the mechanism where bromoethane is produced from ethene?

Electrophilic Addition

CD
Answered by Cam D. Chemistry tutor
2618 Views

Explain what is meant by dynamic equilibrium. (2)

A reversible reaction where the forward and backward reactions occur at the same rate.

SB
Answered by Sam B. Chemistry tutor
3164 Views

Give two reasons why cryolite is used in the electrolysis of aluminium oxide.

The mixture of cryolite and aluminium oxide has a lower melting point than pure aluminium oxide. This means a lower amount of energy is required to establish effective conditions for electrolysis and thus...

JE
Answered by Javier E. Chemistry tutor
88940 Views

The lattice enthalpies of calcium oxide and magnesium oxide are different. Comment on this difference.

Differences in size of an ionic lattice are directly linked to differences in how exothermic the lattice enthalpy of a salt is. 

Mg2+ has a smaller radius than Ca2+  and thus ...

JE
Answered by Javier E. Chemistry tutor
16508 Views

Why do the atomic radii of the elements decrease across a period on the periodic table.

It may seem counterintuative that as the elemets' atomic numbers increase their atomic radii decrease. This is due to the increased electrostatic attraction (coulombic interaction) between nucleus and val...

DH
Answered by Daniel H. Chemistry tutor
3641 Views

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