Chemistry Year 13 Random Retrieval

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Chemistry Year 13 Random Retrieval

This quiz contains all the questions in the year 13 chemistry section. The website will pick 10 questions at random.

1 / 10

What is the main organic product when benzene reacts with 2-iodo-2-methylpropane in the presence of aluminium chloride?

2 / 10

If the paracetamol molecule shown below is hydrolysed in hot dilute hydrochloric acid, what are the main organic products?

3 / 10

The activation energy for the reaction of sodium thiosulfate with acid is close to 50 kJ mol-1. Mixing a measured volumes of sodium thiosulfate solution and hydrochloric acid at 30oC produces a certain amount of sulfur in 120 seconds.

Repeating the experiment with all the conditions the same except the temperature is 40 oC produces the same amount of sulfur in:

4 / 10

By inspection of this experimental data, what is the rate equation for this reaction?

5 / 10

What is the value of the rate constant, k for this reaction at this temperature?

6 / 10

Consider the following homogenius gaseous equilibrium:

ethene + steam <=> ethanol

0.180 mol of ethene as mixed with 1.03 mol of steam and the the mixture heated in the presence of a catalyst. The mixture was sealed in a vessel and allowed to reach equilibrium. At equilibrium, 0.110 mol of ethanol was present in the equilibrium mixture.

Calculate the value of the mole fraction of ethanol present in the mixture under these conditions.

7 / 10

Work out the ratio of the species in the following half-equation.

BrO3- + H+ + e- => Br- + H2O

8 / 10

For this question, look at the resource, ‘A Selection of Standard Electrode Potentials’ (‘A Selection of Standard Electrode Potentials’can be found in TOOLS>Data Sheets)

Under standard conditions, can Br2(aq) oxidise Cr3+(aq) to dichromate(VI)?

9 / 10

Consider a cell constructed from the following half-cells:

Zn2+(aq) + 2e- <=> Zn(s) Eϴ/V = -0.76

Cu2+(aq) + 2e- <=>Cu(s) Eϴ/V = +0.34

Which half-cell will form the cathode in this cell? Think very carefully about the definition of a cathode!

10 / 10

For this question, look at the resource, ‘A Selection of Standard Electrode Potentials’ (‘A Selection of Standard Electrode Potentials’can be found in TOOLS>Data Sheets)

Which chemical species is most resistant to reduction?

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