Question

Hi, can you help me with this question. Please

That's why you can see that octane molecules are more strongly attracted to each other, so the drop can be pulled farther apart before snapping. Remember these attractive forces caused by momentary charge imbalanced are called London Dispersion Forces. The longer the molecule, the greater the attraction. Based on this idea, predict the surface tension ranking of the following substances: • Decane (C10H22 ) • Hexane (C6 H14) • Octane (C8H18) • Pentane (C5H12) Write your prediction in the space below, and then press the button below to submit your answer and see the next section. BI U EEEE ® fx 1. are AG

Answer 1

as the length of the carbon chain increases , the molecular weight of the compound increases and as a result the london dispersion forces also increases in the molecule.

this forces create a tension on the surface of the molecule and this is called the surface tension and this increases as the length of the carbon chain increases.

so , the surface tension ranking of the above given compounds become

decane > octane > hexane > pentane