Is paper made from linen more or less acidic than paper made from wood? which type of paper lasts longer?

Paper made from linen lasts longer and is less acidic

Explanation:

Paper made from wood is more susceptible to acid hydrolysis which slowly decomposes the paper. This is known as 'slow fire'. Linen papers contain less acidic additives which increases their stability when compared to wood papers. All papers eventually degrade with time since they all contain cellulose which produces acidic materials with time but paper made from linen is significantly less acidic, more stable and lasts for a longer time. Paper made from wood contains lignin. This material could react with oxygen and other substances thereby making the paper to turn yellow with time. This further reduces the quality of wood paper.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.