Chemistry Year 12 Random Retrieval

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Chemistry Year 12 Random Retrieval

This quiz contains all the questions in the year 12 chemistry section. The website will pick 10 questions at random.

1 / 10

Which of these hydrocarbons is an alkane?

2 / 10

Which of these alcohols is oxidised to a ketone by a hot acidic solution of potassium dichromate(VI)?

(i) (CH3)3COH

(ii) CH3CH2CHOHCH3

(iii) CH3CH2CH2CH2OH

(iv) CH3C(CH3)2CH2CHOHCH3

3 / 10

In a two step synthesis of butanoic acid what is the formula of compound X?

CH3CH2CH2Br -> X -> CH3CH2CH2CO2H

4 / 10

The electron configuration of a chloride ion is:

5 / 10

Using enthalpies of combustion ΔcH, calculate the enthalpy change for the cracking of butane:

C4H10(g) => C2H6(g) + C2H4(g)

Select the data from the 'Selection of Enthalpies of Formation and Combustion' shown above.

If this question was generated from Random Retrieval, this data can also be found in TOOLS>Data Sheets.

6 / 10

The enthalpy of combustion ΔcH of butan-1-ol = -2670 kJ mol-1

Using this figure and data from the 'Selection of Enthalpies of Formation and Combustion' shown above, calculate the enthalpy of formation ΔfH of liquid butan-1-ol

A Hess Cycle should be drawn to help you calculate this.

If this question was generated from Random Retrieval, this data can also be found in TOOLS>Data Sheets.

7 / 10

The value that you obtain for the enthalpy of combustion ΔcH of liquid ethanol using mean bond enthalpies is different from the value obtained experimentally, or by using enthalpy of formation ΔfH of liquid ethanol.

What is the most significant reason for this?

8 / 10

What is the electronic configuration of carbon?

Enter your answer in the following format 1s2 2s2 etc. (note the space between each sub-shell!) Follow the aufbau order of sub-shell filling.

9 / 10

How many filled orbitals are there in the neon atom?

10 / 10

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