11.2. Naming organic compounds
A subsection of Chemistry, 0620, through 11. Organic chemistry
Listing 10 of 185 questions
Many organic compounds, such as alcohols, carboxylicacids and esters, contain the elements carbon, hydrogen and oxygen only. CompoundR has the following composition by mass: C, 60.00%; H, 13.33%; O, 26.67%. Calculate the empirical formula of compound R.  empirical formula = CompoundS has the empirical formula C2H4O and a relative molecular mass of 88. Calculate the molecular formula of compound S. molecular formula = Compounds T and V both have the molecular formula C3H6O2. ● ● Compound T produces bubbles of carbon dioxide gas when it is added to aqueous sodiumcarbonate. ● ● Compound V is an ester. What is the name given to compounds with the same molecular formula but different structures? Draw the structures of compounds T and V. Show all of the atoms and all of the bonds. compound T compound V All compounds with the molecular formula C3H6O2 can undergo complete combustion in an excess of oxygen. Complete the chemical equation for this reaction. C3H6O2 + + Compound W has the molecular formula C2H6O. Compound W reacts when heated with ethanoicacid and a catalyst to produce a sweet‑smelling liquid. Give the name of the homologous series to which compound W belongs. Draw the structure of compoundW. Show all of the atoms and all of the bonds.  Alkanes and alkenes are hydrocarbons. What is meant by the term hydrocarbon? State the general formula of: alkanes alkenes Ethanol can be produced from long‑chain alkanes as shown. step 1 step 2 long‑chain alkane ethene ethanol Describe the two‑stage manufacture of ethanol from the long‑chain alkane octane, C8H18. Include: ● ● the names of the types of chemical reactions that occur ● ● reaction equations ● ● reaction conditions. step 1 step 2
0620_s18_qp_42
THEORY
2018
Paper 4, Variant 2
View
Questions Discovered
185