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Aspirin C9H8O4 is made when salicylic acid C7H6O3 reacts with ethanoic anhydride C4H6O3 . The equation for this reaction is: C7H6O3 + C4H6O3 → C9H8O4 + CH3COOH Calculate the maximum mass of aspirin that could be made from 100 g of salicylic acid.

A relevant equation is: mass = moles x relative formula mass Also written: m = n*M r This reaction is a 1:1 ratio of salicylic acid to aspirin, meaning 1 mole of salicylic acid makes a maximum of 1 mole of a...
EH
Answered by Emma H. • Chemistry tutor
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What mass of carbon dioxide is produced from burning 100 grams of ethanol in oxygen according to this reaction: C2H5OH + 3 O2 --> 2 CO2 + 3 H2O

When approaching a question like this I always find it easier to write out the equation with the known quantities written underneath each individual compound. This allows us to easily check whether the equat...
KM
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What evidence is there to support the delocalised model of benzene over Kekulé's model?

Bond lengths - a single bond is 0.153nm while a double bond is 0.134nm, making Kekulé's model of alternating single and double bonds asymmetric. Other evidence shows benzene to be symmetrical so it cannot ha...
KF
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How do ionic charge and radius affect lattice enthalpy?

As the charge of an ion increases, so does its charge density. The ion can therefore form stronger electrostatic forces of attraction, resulting in stronger bonds. As these bonds form to produce a lattice st...
KF
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How can an aldehyde be distinguished from a ketone?

An aldehyde will react with Tollen's reagent to form a characteristic silver mirror, whereas a ketone will not react. This is because an aldehyde can be oxidised to a carboxylic acid, reducing Tollen's reage...
KF
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