Propene reacts with hydrogen to form propane.
C3H6+H2→C3H8 \mathrm{C_{3}H_{6}+H_{2}\rightarrow C_{3}H_{8}} C3H6+H2→C3H8Relative atomic mass (ArA_rAr): H = 1.0 C = 12.0
What mass of hydrogen reacts completely with 21 g of propene?
0.5 g
1.0 g
2.0 g
21 g
63 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.