23.6 The following pairs of materials were rubbed together and the sign and appr

Question

23.6 The following pairs of materials were rubbed together and the sign and approximate magnitude of the charge on each mate- rial noted. Use this information to rank these materials from least electronegative (most likely to lose electrons) to most electronega- tive. In other words construct a small triboelectric series. r and synthetic rubber: paper, small +ve charge; rubber, small -ve charge. Paper and polypropylene material: charge; polypropylene, medium-ve charge. Rabbit fur and synthetic rubber: fur, medium +ve charge; rub- ber, medium -ve charge. Rabbit fur and polypropylene material: fur, large +ve charge; polypropylene, large -ve charge.

Explanation / Answer

For the positive charges; Rabbit fur has the most positive charge (+++) followed by Paper which has a small positive charge (+) associated to it. Therefore, Rabbit fur is more electropositive than paper.

Polypropylene has most negative charge (---) followed by Synthetic Rubber which has a medium negative charge (--). Therefore, Polypropylene is more electronegative than Synthetic Rubber.

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