An alkane is cracked. The other product, X, is an alkene.
C13H28→C6H14+X \mathrm{C_{13}H_{28}\rightarrow C_{6}H_{14}+X} C13H28→C6H14+XA batch produces 39.2 g of X. All of X is then reacted with hydrogen.
Relative atomic mass (ArA_rAr): H = 1.0 C = 12.0
Calculate the mass of hydrogen that reacts completely with the sample of X.
Show your working.
131 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.