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How is the electronic structure of sodium different to chlorine?

(Draw the two out) Chlorine has 7 electrons in its outer shell while sodium has only one.
TH
Answered by Tabitha H. • Chemistry tutor
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titration calculation: 35cm3 of Hydrochloric Acid reacts with 27.5cm3, 0.3mol/dm3 NaOH. What is the Concentration of the Hydrochloric Acid?

Write out what you know: HCL - VOL: 35 --- CONC: (x) --- MOL: (x) NaOH - VOL: 27.5 --- CONC: 0.3 --- MOL: (x) Realise what you can work out - Mol of NaOH in this case Mol = Conc x (Vol/1000) so Mol = 0.3 x (...
GK
Answered by Ghazn K. • Chemistry tutor
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Give the pH of an alkaline solution

pH 8-14 (anything above pH 7 can be seen as alkaline)
JB
Answered by Jodie B. • Chemistry tutor
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How do perturbations to a system affect the equilibrium position of a reaction?

If a perturbation is applied to a system in dynamic equilbirium, the position of equilbirium will shift to favour the reaction which minimises the effect of the perturbation. If the forward reaction is exoth...
GO
Answered by Gwyndaf O. • Chemistry tutor
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In fractional distillation the shorter hydrocarbons have lower boiling points and distil off first. Why?

Boiling points are determined by the interactions between the individual hydrocarbon molecules . The weaker the interactions, the less energy is required to boil the hydrocarbon and the lower the boiling poi...
HB
Answered by Hannah B. • Chemistry tutor
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