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Chemistry
GCSE

Describe the process of distillation

Distillation is the process of boiling and condensing a mixture of liquids in a closed system, allowing the products to escape. This can separate products because the one with the lower boiling point will...

Answered by John A. Chemistry tutor
2321 Views

Explain why potassium is more reactive than sodium, giving the balanced chemical symbol equation for the reaction of potassium and water.

K + H2O --> KOH + H2Both potassium and sodium possess one electron in their outer shell. Both elements readily give up this unpaired electron and so for this reason are considere...

Answered by Liam F. Chemistry tutor
42724 Views

Calculate the concentration in mol/dm3 of 8.0 g of sodium hydroxide (NaOH) in solution with a volume of 50 cm3. (Note Ar(Na) = 23, Ar(O) = 16, Ar(H) = 1)

Calculate Mr(NaOH): Mr(NaOH) = 23 + 16 + 1 = 40, Calculate NaOH moles: n= m/Mr, n= 8.0/40, n= 0.2 moles, Calculate NaOH concentration:(converting from cm3 to dm3 by /1000) c= n/v, c=...

Answered by Imogen C. Chemistry tutor
7490 Views

Why does Sodium Chloride have a high melting point?

Sodium Chloride has a high melting point, as it has a giant ionic lattice hence has strong electrostatic forces of attraction between oppositely charged ions, which requires lots of energy to overcome the...

Answered by Vithullan S. Chemistry tutor
29870 Views

How do I balance equations?

Balancing equations will become natural if you do it long enough but takes a bit of practice and can be tedious! It can be a bit of trial and error at times. It is important to remember that numbers of el...

Answered by Aysha M. Chemistry tutor
1571 Views

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