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Chemistry
A Level

What is enthalpy and how can it be calculated?

Enthalpy is a thermodynamic property that chemists can use to describe the heat energy transferred throughout a chemical reaction. It is especially useful given that it is defined as "a measure of h...

Answered by • Chemistry tutor
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A) The compound butan-2-ol reacts with acidified potassium dichromate(VI) to form a new compound. Give the IUPAC name of the Product. B) 2,2-dimethyl butan-2-ol was subjected to the same conditions. State and explain the outcome

A) butan-2-one. [1 mark]
B) 2,2-dimethyl-butan-2-ol is a tertiary alcohol so it is not oxidised and would be recovered unreacted [2 marks]

Answered by • Chemistry tutor
6260 Views

At 25 °C, the initial rate of reaction is 3.1 × 10−3 mol dm−3 s−1 when the initial concentration of C is 0.48 mol dm−3 and the initial concentration of D is 0.23 mol dm−3 . Calculate a value for the rate constant at this T when rate = k [C][D].

The rate equation is given. So the first step is rearranging it to make the rate constant k the subject of the equation, by dividing both sides by [C][D]. k = (rate/[C][D]) now plug in the values given in...

KC
Answered by Krystof C. • Chemistry tutor
3498 Views

Describe a two step reaction route that can convert 1-Butene (CH2CHCH2CH3) into a compound that is more soluble in water. Use mechanisms to aid your answer (HINT: one of the steps involves nucleophilic substitution)

CH2CHCH2CH3 + HBr (room temp) --> CH3CH(Br)CH2CH3CH3CH(Br)CH2CH3 + NaOH (reflux) --> CH3...

SN
Answered by Sean N. • Chemistry tutor
1584 Views

Rank the following compounds in acending order of melting point (and explain your reasoning): CH3CH2CH2NH2, CH3CH2CH3, CH3CH2CH2OH

CH3CH2CH3 , CH3CH2CH2NH2 , CH3CH2CH2OHThe only major intermolecular force that takes place in ...

SN
Answered by Sean N. • Chemistry tutor
2256 Views

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