0.90g of an organic acid on combustion give 0.88g of CO2 and 0.18g of H2O if the vapor density of acid use was 45 calculate the molecular mass

h

the answer is d. 74.02

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.