Concept explainers
(a)
Interpretation:
Among the solutions W, X, Y, Z, the one that has highest
Concept Introduction:
Equilibrium constant for water can be given by the equation shown below,
This is also known as ionization constant for water.
The above equation applies to water and all aqueous solutions. From this the solution is acidic, basic, or neutral can be identified. This can be given as shown below,
(a)
Explanation of Solution
Solution W:
Concentration of
Concentration of
Solution X:
Concentration of
Concentration of
Solution Y:
Concentration of
Concentration of
Solution Z:
Concentration of
Concentration of
All the solutions can be arranged in the order or decreasing
The solution that has highest concentration of
(b)
Interpretation:
Among the solutions W, X, Y, Z, two solutions that has concentration of
(b)
Explanation of Solution
All the given solutions can be arranged in the order or decreasing
The solutions that have concentration
Solution Z:
Concentration of
Solution X:
Concentration of
(c)
Interpretation:
Among the solutions W, X, Y, Z, the one that is closest to being a neutral solution has to be identified.
Concept Introduction:
Refer part (a).
(c)
Explanation of Solution
All the given solutions can be arranged in the order or decreasing
Neutral solution has the concentration of
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Chapter 14 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
- Classify each of the following as a strong or weak acid or base. a NH3 b HCNO c Mg(OH)2 d HClO3arrow_forwardWrite two BrnstedLowry acid-base reactions and show how they represent proton-transfer reactions.arrow_forwardPhosphoric acid, H3PO4, has three protons that can ionize. Write the equations for its three ionization reactions, each of which is a dynamic equilibrium.arrow_forward
- A solution of sodium cyanide, NaCN, has a pH of 12.10. How many grams of NaCN are in 425 mL of a solution with the same pH?arrow_forwardThe pH reading of a sample of each substance is given. Calculate the hydrogen ion concentration of the substance. (Give your answers in scientific notation, correct to one decimal place.) (a) Spinach: pH = 5.4 [H+] = 3.98107 -6 x 10 M (b) Crackers: pH = 7.2 [H*] = х 10 Marrow_forwardCalculate the hydrogen ion concentration in mol/L for solutions with the following pH values: (a) 2.42, (b) 11.21, (c) 6.96, (d) 15.00.arrow_forward
- 6. Acids and bases are defined by their donation or acceptance of a proton according to the (a) Arrhenius model. (b) Bronsted-Lowry model. (c) Lewis model.arrow_forwardThe pH reading of a sample of each substance is given. Calculate the hydrogen ion concentration of the substance. (Give your answers in scientific notation, correct to one decimal place.) (a) Spinach: pH = 5.4(b) Crackers: pH = 7.2arrow_forwardDetermine the pH of each solution and classify it as acidic,basic, or neutral.(a) pOH = 8.5(b) pOH = 4.2(c) pOH = 1.7(d) pOH = 7.0arrow_forward
- The pH scale for acidity is defined by pH – log10 H*| where |H*| is the concentration of hydrogen ions measured in moles per liter (M). (A) The pH of Drano is 13.3. Calculate the concentration of hydrogen ions in moles per liter (M). [H*] = M (B) The pH of rain water is 5.5. Calculate the concentration of hydrogen ions in moles per liter (M). [H*] = Marrow_forwardAcidity of a solution is determined by the concentration H of hydrogen ions in the solution (measured in moles per liter of solution). Chemists use the negative of the logarithm of the concentration of hydrogen ions to define the pH scale, as shown in the following formula. pH = -log (H) Lower pH values indicate a more acidic solution. (a) Normal rain has a pH value of 5.6. Rain in the eastern United States often has a pH level of 3.8. How much more acidic is this than normal rain? (Round your answer to two decimal places.) 63.10 times as acidic as normal rain (b) If the pH of water in a lake falls below a value of 5, fish often fail to reproduce. How much more acidic is this than normal water with a pH of 5.6? (Round your answer to two decimal places.) * times as acidic as normal waterarrow_forwardA citrus tree can't get the nutrients it needs from the soil if its pH is above 6.5. (a) The hydrogen ion concentration of a soil sample is [H+] = 1.58 × 10−7 M. What is the pH of the soil? (Round your answer to one decimal place.)Is this soil suitable for citrus trees? Yes No (b) After the soil is amended, the pH is 5.6. Is the amended soil more acidic or less acidic than the original soil? more acidic less acidicarrow_forward
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