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Question 1

Why are hot water baths use to heat reactants

Answer 1

Reactants are flammable so hot water baths will mean they won’t catch fire.

Question 2

How to draw product of ester and sodium hydroxide

Answer 2

Draw Carboxylic side but rather than OH draw O- and Na+

Question 3

Why should a beaker containing a reaction be dry?

Answer 3

Water inside it would change concentration of reactants

Question 4

When asked for product of oxidisation of an alcohol that is acidic it will always be

Answer 4

Carboxylic acid e.g.

Butanoic acid

Question 5

Most unsaturated molecule will be one with

Answer 5

Highest carbon to hydrogen ratio

Higher carbons, lower hydrogens

Question 6

Bond breaking is…..bond making is ……

Answer 6

Bond breaking is endothermic (+)and bond making is exothermic(-)

Question 7

When drawing concentration on rate of reaction graph remember -

Answer 7

Graph will be taller but start and finish in same place

Question 8

When writing ionic equations remember

Answer 8

If there is a number beside one of the elements draw brackets around the element and the charge

Question 9

Is CO a reducing or oxidising agent?

Answer 9

CO reduces metal ores to metals as such acts as a reducing agent.

Question 10

Difference between bond enthalpy and mean bond enthalpy

Answer 10

Mean bond enthalpy is an average energy held within a bond from a number of different compounds whereas bond enthalpies relates to one particular compound or molecules bond enthalpy.

Question 11

When stating answer for enthalpy of combustion of x

Answer 11

Remember answer is - xKJmol-1