An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. The copper electrode is placed in a solution of 0.10 M NaOH that is saturated with Cu(OH)2. Calculate the cell potential. The Ksp of Cu(OH)2 is 1.6 x 10-19.

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.