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LQ for web 2_21 thru 2_23 wi06

LQ for web 2_21 thru 2_23 wi06 - What is the conjugate acid...

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What is the conjugate acid of H 2 PO 4 - ? HPO42- H3PO4 H2PO4+ HPO4- H2PO4 20% 20% 20% 20% 20% 1. HPO 4 2- 2. H 3 PO 4 3. H 2 PO 4 + 4. HPO 4 - 5. H 2 PO 4
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What is the conjugate base of HSO 3 - ? HSO32- H3SO4 H2SO3+ SO32- H2SO4 20% 20% 20% 20% 20% 1. HSO 3 2- 2. H 3 SO 4 3. H 2 SO 3 + 4. SO 3 2- 5. H 2 SO 4
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LQ. Tuesday 2-21-06 What is the pH of a solution that has an HBr concentration of 0.32 M ? 13.2 -13.2 -0.49 4.9 x 10-1 11.3 x 10-1 20% 20% 20% 20% 20% 1. 13.2 2. -13.2 3. -0.49 4. 4.9 x 10 -1 5. 11.3 x 10 -1
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What is the pH of a solution that has a pOH of 3.2 ? 14 10.8 11.8 10-3.2 17.2 20% 20% 20% 20% 20% 1. 14 2. 10.8 3. 11.8 4. 10 -3.2 5. 17.2
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Answers for LQs above: Slide 1, H 3 PO 4 (#2) Slide 2, SO 3 2- (#4) Slide 3, 0.49 (4.9 x 10 -1 ) (#4) Slide 4, pH=10.8 (#2)
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Thursday, February 23 rd , 2006 In-Lecture To Do List 1. conjugate acid/base review a. Q1. problem 2. Kw & pX function review a. pH estimation (from website) b. Q2. pX problem 3. CO 2 in water (short movie from Ch18) 4. Polyprotic acids and bases a. Q3, Q4…
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Q1. What is the conjugate base of CH 3 NH 3 + ? (time: 1 minute) CH3NH3- CH3NH2 CH3NH2- CH3NH2+ CH3NH3 20% 20% 20% 20% 20% 1. CH 3 NH 3 - 2. CH 3 NH 2 3. CH 3 NH 2 - 4. CH 3 NH 2 + 5. CH 3 NH 3
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Q2. The hydronium ion concentration of a glass
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