Previous Test 3

Previous Test 3 - 1) Which of the following is an Arrhenius...

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1) Which ofthe following is an Arrhenius acid? 1) _. ...::: . _ .. A)IJOH -B) H2SO4 C) NH2CH3 D) CH3CH3 E) More than one of these is an Arrhenius acid. 2) Whatis the conjugate base of H2P04- ? 2) _ A) P043- B) H3o+ - C) HP042- 3) Which of the following a polyprotic acid? 3) _=-,-_ A)HCN B)CH4 -q H2S04 D)HF E) HC2H302 4) Which of the following acids is the STRONGEST? The acid followed by its K a value. 4)~ .... A) HOi02, 1.8 x 10-4 B) HF, 3.5 x --C) H002, 1.1 x 10- 2 D) HCN, 4.9 x 10 E) HN02, 4.6 x 10-4 . \ 0 i r ,; ~-.~'J~} 5) What is the pH ofpure water at 40.0°C if the K w at this te~erature is 2.92 x 10-14? 5) \.... A) 0.465 B) 8.446 C) 7.233 D) 7.000 - E) 6.767 ..r~ 6) Determine the K a for 0i3NH3+. The 1<b for OiaNH2 is 4.4 x 10-4. 6) _,,---,,_._ A) 6.8 x 11 \ I v \i "r __. ., : B) 5.6 x 10 f-c . f_ b C) 3.1 x 10 D) 2.3 x 3 ~E) 2.3 x 10- U-- 7) Calculate the pH of a solution that contains 7.8 x 10- 6 M OH- at 25°C 7) I \ - A) 8.89 B) 1.28 5.11 D) 12.72 E) 9.64 8) Determine the pH of a 0.023 M HN03 solution. 8) A) 2.49 B) 3.68 - C) 1.64 2.30 E) 12.36 1
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J:i)tl7 ' 9) Find the percentionization of a 0.337 M HF solution. The K a for HF is 3.5 x 10-4. 9) 1 A) 4.7% _B) 3.2% C) 3.5 x 10- 2 % D) 1.2 x 2 % E) 1.1 % 10) Detetmine the pH of a 0.188 M NH3 solution. The Kb of NH3 is 1.76 x 5 .
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Previous Test 3 - 1) Which of the following is an Arrhenius...

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