Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- 12) A 100.0 mL sample of 0.180 M HClO 4 is titrated with 0.270 M LiOH. Determine the pH of the solution after the addition of 75.0 mL of LiOH. 13) A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M KOH. Determine the pH of the solution before the addition of any KOH. The K aof HF is 3.5 × 10-4. 14) A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 150.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5. 15) A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 200.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5. 16) A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 200.0 mL HBr. 17) A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 300.0 mL HBr. 18) A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M KOH.…arrow_forwardPH of diluted calcium hydroxide solution= 7.01 What is the hydronium ion concentration in dilute solution, M? What is the hydroxide ion concentration in diluted solution, M? What is the hydroxide ion concentration in saturated solution,M? Calculated solubility product of calcium hydroxide?arrow_forwardA chemistry graduate student is given 500. mL of a 0.40 M ammonia (NH3) solution. Ammonia is a weak base with Kb=1.8x 10^-5 . What mass of NH4C1 should the student dissolve in the NH3 solution to turn it into a buffer with pH = 8.85? You may assume that the volume of the solution doesn't change when the NH, C1 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.arrow_forward
- 21- The mass-action effect is a shift in the position of an equilibrium caused by adding one of the reactants or products to a system. O True O False 20- Buffer solution is a mixture of a weak acid and it's salt. or weak base and it's salt. the pH of buffer resists change upon adding small amount of strong acid or base or when it dilute. O True O False I 22- Equilibrium-constant are algebraic equations that describe the concentration relationships among reactants and products at equilibrium O True O False ترك السؤال ترك السؤال ارسال الاجابة ارسال الاجابةarrow_forwardWhen 1.0 mL of 1.0 M HCl is added to 50. mL of a buffer solution that is 1.0 M in HC2H3O2 and 1.0 M in NaC2H3O2, the [H+] changes from 1.8 x 10-5 M to 1.9 x 10-5 M. Calculate the initial pH and the pH change in the solution. Initial pH: pH change:arrow_forwardo ooo For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility. You'll find K data in the ALEKS Data tab. sp Does solubility change with pH? highest solubility compound pH = 2 pH = 3 pH = 5 yes PbCl2 O no dla O yes BaCO, O no O yes ZnS O no Explanation Check 2021 McGraw Hill Education All Rights Rese Terms of Use Privacy Accessibility O VI 1:41arrow_forward
- For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility. You'll find K data in the ALEKS Data tab. sp Does solubility change with pH? compound highest solubility pH = 3 pH = 4 pH = 5 O yes AgCN O no O yes dla Ca(OH), O no O yes MgCl, O no Check Explanation 2021 McGraw H Education V1 434 acer n led delete backspace & % 8 esc 24 7 6 23 @ 4arrow_forwardCalculate the amount of 6M HCl required to neutralize the solutions in beakers #1 and #2. Note: Saturated NaHCO3 has a concentration of about 1.1M. (use the last page for your calculations)arrow_forwardA buffer is made by mixing 1.250 mol formic acid, HCOOH, with 0.750 mol sodium formate, HCOONa in enough water for a total volume of 1.00L. The Ka of formic acid is 1.87 x 10-4 a. What is the pH of this buffer? b. If 0.075 mol HCI is added to this buffer, what is the pH of the resulting buffer? (assume no volume changes) c. If 0.055 mol NaOH is added to this buffer, what is the pH of the resulting buffer? (Assume no volume changes)arrow_forward
- Which of the following aqueous solutions are good buffer systems? 0.28 M perchloric acid + 0.19 M sodium perchlorate 0.38 M sodium perchlorate + 0.29 M barium perchlorate 0.16 M potassium hydroxide + 0.20 M potassium chloride 0.30 M ammonia + 0.35 M sodium hydroxide 0.15 M acetic acid + 0.12 M sodium acetatearrow_forwardWhich of the following aqueous solutions are good buffer systems? 0.13 M acetic acid + 0.20 M sodium acetate 0.20 M nitric acid + 0.25 M sodium nitrate 0.28 M ammonium nitrate + 0.36 M ammonia 0.13 M potassium hydroxide + 0.22 M potassium chloride 0.32 M nitrous acid + 0.30 M sodium nitritearrow_forward2??arrow_forward
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