Question 1
How many millilitres of 0.152 mol L
-1 HClO
4 solution are needed to neutralize 50.00 mL of 0.0793 mol L
-1 NaOH?
◦ 0.603
◦ 0.104
◦ 95.8
◦ 26.1
◦ 0.0383
Question 2
What is the oxidation number of the sulfur atom in K
2SO
4 ?
◦ +4
◦ -2
◦ +2
◦ +6