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

One mole of an alkane needs 8 moles of oxygen for complete combustion. What is the molecular formula of the alkane?

C₄H₁₀

C₅H₁₂

C₆H₁₄

C₈H₁₈

2 / 10

Name the alkene CH₃CH(CH₃)CH=CHCH₃.

4-methylpent-2-ene

2-methylpent-3-ene

2-methylhex-2-ene

2-methylhex-3-ene

3 / 10

What are the conditions for converting 1,2-dichlorethane into ethane-1,2-diol?

heat with dilute hydrochloric acid

heat with aqueous sodium hydroxide

heat with acidified potassium dichromate

heat with dilute, acidic potassium manganate(VII)

4 / 10

Choose one of the following options:

3‐fluorocyclohexanal

2‐fluorocyclohexan‐1‐one

3‐fluorohexan‐1‐one

3‐fluorocyclohexan‐1‐one

5 / 10

Which of these statements about atomic and ionic radii are true?

(i) Atomic radii increase down group 2

(ii) Ionic radii increase down group 7

(iii) Atomic radii decrease across period 3

(iv) In period 3 the ionic radii are smaller than the atomic radii

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

6 / 10

What is the oxidation number of MANGANESE in

MnO₄^-

7 / 10

What is the oxidation number of SULFUR in

S₂O₃^2-

8 / 10

Using enthalpies of formation Δ_fH, calculate the enthalpy change for the following esterification reaction.

CH₃COOH_(l) + C₂H₅OH_(l) => CH₃COOCH₂CH₃_(l) + H₂O_(l)

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.

-2 kJ mol^-1

-1 kJ mol^-1

1 kJ mol^-1

4 kJ mol^-1

9 / 10

10 / 10

A molecule of sulfur hexafluoride, SF₆ is:

planar

tetrahedral

pyramidal

octahedral

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