(a) X and Y are two homologous carbon compounds whose boiling points are given in the table. (1) Which molecule will have higher molecular mass? (ii) Will they have similar or different chemical properties? Why? Boiling point (°C) X 65 Y 97 (b) Write the chemical formulae of first two members of a homologous series of alkane.​

Answer:

itna chemical formula of lace first two

Answer:

Concept:

A homologous series is a family of chemicals with the same substituent and similar chemical characteristics that can be unbranched or branched, or that differ by having a CH2 molecular formula and a 14u molecular mass. The number of monomers in a homopolymer like amylose, or the length of a carbon chain, such as in straight-chained alkanes (paraffins), are two examples of this.

Given:

The boiling temperatures of X and Y, two homologous carbon compounds, are listed in the table.

(1). Which molecule will be larger in size?

(i). Will their chemical characteristics be the same or distinct? Why? Maximum temperature (°C) X 65 Y 97

(b). Write down the chemical formulas for the first two alkanes in a homologous sequence.

Find:

Discover the responses to the questions asked.

Answer:

(a). Due to the additional intermolecular tension of hydrogen bonds, alcohols (alkanols) exhibit much higher boiling temperatures than alkanes, BUT ONLY for the lower members. The homologous series' alkanes' constant change in physical characteristics is brought about by their continually expanding molecular size. The growing forces of attraction between molecules of growing size are what cause the rising boiling point.

(i). Its higher boiling point than Y causes its molecular mass to be greater. To break more bonds, more energy is required.

(ii). Since they are homologous carbon molecules, their chemical characteristics will be similar.

(b). For straight or branched chain alkanes, the usual molecular formula is CnH2n+2, and for cyclic alkanes, it is CnH2n. For instance, each of the four hydrocarbon molecules in the diagram has 8 carbon atoms.

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