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State and explain the general trend in the first ionisation energies of the Period 2 elements Lithium to Fluorine.

The general trend is that the first ionisation energies increase across the period.First ionisation energies increase across the period as from Lithium to Fluorine the nuclear charge is increasing yet the...

Answered by Alice M. • Chemistry tutor

4106 Views

Explain why the first ionisation energy of barium is less than the first ionisation energy of calcium.

Barium is in the sixth period, Calcium is in the fourth. Therefore, Barium experiences more shielding, resulting in weaker attraction of the nucleus for outermost electrons.

Answered by Joseph F. • Chemistry tutor

4242 Views

How does increasing temperature cause an increase in rate of reaction?

As you increase the temperature of the reaction, the particles gain kinetic energy. This causes them to move faster and as a result, the frequency of collisions increases. This means there is an increased...

Answered by Aryan B. • Chemistry tutor

1978 Views

Heating 3.210g of hydrated magnesium sulfate, MgSO4.XH2O, forms 1.567g of anhydrous magnesium sulfate. Find the value of X and write the formula of the hydrated salt

We need to find the value of X (the water of crystallisation) and to do this we can start by calculating the moles of water lost and the moles of the anhydrous salt (the salt product without water), we do...

Answered by Sebastian R. • Chemistry tutor

13127 Views

For the reaction, 2SO2(g) + O2(g) => 2SO3(g), suggest the optimal conditions to maximise yield of SO3 when the forward reaction is exothermic.

So the most important thing to answer this question is to understand how an equilibrium works: it will always try to counteract the change you are making. For example, if you add more SO₃into ...

Answered by Andre B. • Chemistry tutor

13503 Views