1) A bronsted lowry base is defined as a substance that a) acts as a proton donor b) increases the [H+] when placed in water c) acts as a proton acceptor d) decreases [H+] when placed in water 2) what is the pH of a solution containing [OH⁻] of 0.0025 mol dm⁻³ a) 11.5 b) 12.5 c) 11.4 d) 12.4 3) the magnitude of Kw indicates that a) water ionises very slowy b) water ionises very fast c) water ionises completely d) water ionises to a very small extend 4) A bronsted lowry acid is defiend as as substance that a) acts as a proton donor b) acts as a proton acceptor c) acts as an electron pair donor d) acts as an electron pair acceptor 5) what is th value of [OH⁻] at pH 7.0 a) 1x10⁻⁷ b) 2x10⁻⁷ c) 1x10⁻₈ d) 2x10⁻⁸ 6) what is the pH of a 1.3 mol dm⁻³ solution of sulphuric acid a) -0.11 b) -0.42 c) +.42 d) +0.11 7) What pH does a 0.1 mol dm⁻³ solution of ethanioc acid produce Ka=1.8x10⁻⁵ a) 3.25 b) 2.87 c) 3.12 d) 2.98 8) which substance is acting as a bronstead lowry alkali a) ethanol b) hyrdogen flouride c) ammonia d) hydronium ion 9) what pH is produced when you add 0.1 mol dm⁻³ ethanoic acid and 0.05 mol dm⁻³ sodium ethanote ( Ka= 1.8x10⁻⁵) a) 3.44 b) 4.44 c) 5.44 d) 6.44 10) what is the pH of strong acid with a concentration of 0.000004 mol dm⁻³ a) 6.00 b) 0.6 c) 5.40 d) 0.5

acid base quiz Y13

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