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Explain how a catalyst works to increase the rate of reaction

A catalyst will provide an alternative route for the reaction with a lower activation energy by allowing reacting molecules to bind to their active sites. In addition, a catalyst will not be used up in the r...
AB
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What is the difference between empirical and molecular formula?

The molecular formula of an atom shows you the actual number of atoms of the elements in a compound. For example ethane has molecular formula C2H6 meaning there are 2 carbon atoms and 6 hydrogen atoms in one...
BJ
Answered by Becky J. • Chemistry tutor
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Why does Sodium Bromide have a melting point that is higher than that of Sodium ?

The melting point of the above elements/compounds is based on their bonding. Sodium Bromide has ionic bonding (a very strong type of bonding), which involves an electrostatic force of attraction between posi...
DT
Answered by Devansh T. • Chemistry tutor
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This question is about the ionisation energy of elements across a period. a) Define ionisation energy. b) Explain the trend in ionisation energy across a period.

a) Ionisation energy is the minimum amount of energy required to remove an electron from each atom of one mole of gaseous atoms. b) Across a period, the ionisation energy increases due to the increase in pro...
EC
Answered by Emma C. • Chemistry tutor
1871 Views

Explain why first ionisation energy decreases down a group.

As you go down the group, ionisation energy decreases because there are more electron shells and shielding increases, therefore the outer electron is further away from the positive nucleus and is less strong...
IA
Answered by Ifsa A. • Chemistry tutor
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