2. The viscosity of four types of hydrocarbons was compared by measuring the rate of fall for a ball bearing. The diagram shows the
position of the ball bearings 10 seconds after being dropped in each
liquid. Below each liquid is the stated length of the hydrocarbon chains
found in each substance.
petrol
(C.-C.)
(Co-C+6)
(C1-C16)
(C20-Cse)
(a) State the relationship between the number of carbon atoms and
the effect on the viscosity of the liquid.