From models to materials

Pentan-2-ol can form by reacting pent-1-ene with water in the presence of an acid catalyst. $\ce{CH2=CHCH2CH2CH3(g) + H2O(l) -> CH3CH(OH)CH2CH2CH3(aq)}$ $\Delta H^\ominus = -84\ \mathrm{kJ\,mol^{-1}}$ (i) Explain why increasing the temperature would increase…

Outline why solid tin(IV) iodide is classified as a polar covalent compound. Use sections 9 and 17 of the data booklet.

A student proposed that, because tin(IV) iodide might be ionic, electrolysing the molten compound with inert electrodes should regenerate tin and iodine. (i) Label the diagram of the electrolytic cell to show which electrode is the anode and which is the…

The displayed formula below shows part of the chain of an addition polymer. (i) Deduce the structural formula of the monomer used to build this polymer. (ii) Describe one chemical property responsible for this type of polymer being a useful material.

Which monomer produces this addition polymer? A. $\ce{CH2=CHCH2CH3}$ B. $\ce{CH3CH=CHCH3}$ C. $\ce{CH2=C(CH3)2}$ D. $\ce{CH2=CHCH=CH2}$

Which monomer could produce this polymer? A. $\ce{CH2ClCH2Cl}$ B. $\ce{CHCl2CH3}$ C. $\ce{CH2=CHCl}$ D. $\ce{CH2=CCl2}$

4.81 g of sulfur was heated in a stream of chlorine gas until the reaction was complete. The mass of the chloride produced was 10.13 g. (i) Calculate how many atoms are present in this 4.81 g sample of sulfur. Use sections 2 and 7 of the data booklet. (ii)…

Hex-1-ene, $\ce{CH2=CHCH2CH2CH2CH3}$, is used to manufacture poly(hex-1-ene). (i) Complete the diagram to show the repeating unit of poly(hex-1-ene). (ii) State the type of polymerization that occurs.

A section of a polymer containing three repeating units is shown. Which monomer was used to make this polymer? A. 1,1-dichloroethene B. Chloroethene C. 1,2-dichloroethene D. 3-chloroprop-1-ene

When sodium burns in excess oxygen, the main product is sodium peroxide, $\ce{Na2O2}$. Determine the percentage covalent character and the bonding type in sodium peroxide using sections 9 and 17 of the data booklet.