Concept explainers
Interpretation:
The concentration of
Concept introduction:
In a
It is represented as
Also, the concentration of liquid and solid is not considered in the equilibrium constant expression.
Want to see the full answer?
Check out a sample textbook solutionChapter 16 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
- A chemical system is set up by placing some solid ammonium chloride in an ammonia solution. The equilibrium established can be represented as follows: NH4*(aq) + H2O(e) 2 H30*(aq) + NH3(aq) The pH of the solution is taken, then a small amount of NaOH(aq) is added and the pH is taken again. What can be said about the change in pH for the solution? The pH significantly increases because a strong base has been added to the solution. The pH significantly decreases because a strong base has been added to the solution. There is very little change to the pH of the solution. If anything the pH of the solution decreases slightly. There is very little change to the pH of the solution. If anything the pH of the solution increases slightly.arrow_forwardThe barium oxide is a strong electrolye: BaO(s) + H2O(l) → Ba2+(aq) + 2 OH−(aq). What is the pH of a solution prepared by dissolving 0.175 g of solid BaO in enough water to make 1.00 L of aqueous solution (at 25°C)? Enter your answer in decimal format with two decimal places (value ± 0.02). The answer is 11.36 would like an explanation to this problem please.arrow_forwardChemistry The label of an energy drink states that it contains approximately 80 mg of caffeine (C8H10N4O2) per 250 mL serving. If the caffeine is a weak base with a basicity constant of 2.5 × × 10-4, what is the pH of the drink? (Only caffeine is considered to contribute to the pH of the drink.)arrow_forward
- A solution is formed by adding 2.70 grams of solid sodium hypochlorite, NaClO, to 200.0 ml of 0.0210M calcium hypochlorite, Ca(ClO)₂. Calculate the pH of the resulting solution. You may assume that the sodium hypochlorite dissolve completely and that the change in volume is negligible with the addition of the solid.arrow_forwardDetermine the hydronium ion concentration for a solution of 0.550 M Ca(OH)2.arrow_forwardThe pH of a solution of Ba(OH)2 was 11.489. What was its concentration?arrow_forward
- A laboratory technician wants to determine the aspirin content of a headache pill by acid-base titration. Aspirin has a Ka of 3.0 x 10−4. If the pill is dissolved in water to give a solution about 0.015 M, what is the pH of this solution? (Neglect dilution effects.) If the solution in the problem above is then titrated against KOH solution, what will be the pH at the stoichiometric point.arrow_forwardGiven 0.01 M solutions of each of the following acids, which solution would have the lowest pH? -117 Hypoiodous acid (HOI), K = 2.3 x 10 Hypobromous acid (HOBr), K = 2.5 x 10 Lactic acid (HC₂H₂O₂), K = 1.3 x 10 Chlorous acid (HClO₂), K = 1.1 x 10²arrow_forwardA student is conducting a titration between a weak, monoprotic acid and sodium hydroxide, NaOH. The student titrates 20.0 mL of the weak acid with 0.300 M sodium hydroxide, NaOH(aq). When 5.00 mL of NaOH(aq) has been delivered the pH of the weak acid is 5.328. Determine the Ka of the weak acid.arrow_forward
- Calculate the pH of each of the following buffered solutions. Ka(HC, HgO,)= 1.8 × 10 5 1.0.19 M acetic acid/0.29 M sodium acetate pH = 2. 0.29 M acetic acid/0.19 M sodium acetate pH = 3. 0.060 M acetic acid/0.21 M sodium acetate pH = 4. 0.21 M acetic acid/0.060 M sodium acetate pH = Visitedarrow_forwardEstimate the calcium concentration (in ppm by mass) in a groundwater sample, which has a pH of 5.63. Assume that the groundwater at this location is saturated with CO2 at a partial pressure of 0.185 atm. The atomic weight of calcium is 40.1 g/mol.arrow_forwardDetermine the pH of a 1.497 M solution of potassium cyanide (KCN) in water. Ka for HCN is 6.17 × 10–10. Enter your response in pH units to the nearest 0.01.arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY