8. If the H+concentration is less than 1.0107M, the solution is a) basic b) acidic c) neutral d) amphiprotic e) in equilibrium 9. If the pH of a solution is greater than 7 , the solution is a) acidic b) basic c) amphiprotic d) neutral e) in equilibrium 10. Seawater has a hydroxide ion concentration of 2.0106M. What is the pH of seawater? a) 8.30 b) 5.70 c) 6.99 d) 7.53 e) 8.30 11. All of the following species are strong bases except a) NaOH b) KOH c) Sr(OH)2 d) Mg(OH)2 e) RbOH 12. Which of the following species is a weak base? a) KOH b) NH4+ c) HF d) H3PO4 e) CH3NH2 13. Which one of the following is a weak acid? a) HNO3 b) HI c) HBr d) H2SO3 e) HClO4