Which of the following statements about a concentration cell is false? Group of answer choices The spontaneous reaction is always from the more dilute solution to the more concentrated solution. The concentration decreases in the more concentrated half-cell. Both half-cells are composed of the same species. The concentration increases in the less concentrated half-cell. E° is always zero in a concentration cell.

gold is my favorite solid.

16

explanation:

the marks go by 4s

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.