Edexcel Additional Chemistry C2 Formulas?

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michaelistudent
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Report Thread starter 6 years ago
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Key formulas to memorise for tomorrows exam?
i.e empirical formula, rf etc.
Thank u
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HarryKane28
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(Original post by studentjjs)
Key formulas to memorise for tomorrows exam?
i.e empirical formula, rf etc.
Thank u
Hey,

Heres a few:

Percentage mass and composition
RAM and RFM
Maximum amount of product from specified reactants
Empirical Formula
Rf values and Chromatography (very likely tomorrow)
Percentage yield
etc.
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michaelistudent
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Report Thread starter 6 years ago
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(Original post by HarryKane28)
Hey,

Heres a few:

Percentage mass and composition
RAM and RFM
Maximum amount of product from specified reactants
Empirical Formula
Rf values and Chromatography (very likely tomorrow)
Percentage yield
etc.
Thank you so much! But do u know the simplified versions like formulae in maths?
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HarryKane28
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(Original post by studentjjs)
Thank you so much! But do u know the simplified versions like formulae in maths?
Alright!

percentage yield = (actual mass of product) ÷ (theoretical mass of product) × 100

To find the relative formula mass (Mr) of a compound, you just add together the Ar values for all the atoms in its formula.

Actually let me just link you the best link for this...

http://www.bbc.co.uk/schools/gcsebit...ionsrev1.shtml
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