Concept explainers
Interpretation:
The
Concept Information:
Acid ionization constant
The equilibrium expression for the reaction
Where
pH definition:
The concentration of hydrogen ion is measured using
The
On rearraging, the concentration of hydrogen ions can be calculated as follows,
To Determine: The
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Chemistry: Atoms First
- Using the diagrams shown in Problem 10-37, which of the four acids is the weakest acid?arrow_forwardThe weak base, CIO (hypochlorite ion), is used in the form of NaCIO as a disinfectant in swimming pools and water treatment plants. What are the concentrations of HCIO and OH and the pH of a 0.015 M solution of NaCIO?arrow_forwardMethylamine (CH3NH2) has Kb = 4.4 x 10–4. What is the pH of 0.15 M aqueous solution of methylamine? (A) 1.68 (B) 2.09 (C) 11.91 (D) 13.18arrow_forward
- The benzoate ion, C6H5COO-, is a weak base withKb = 1.6 x 10-10. How many moles of sodium benzoate are present in 0.50 L of a solution of NaC6H5COO if the pH is9.04?(a) 0.38 (b) 0.66 (c) 0.76 (d) 1.5 (e) 2.9arrow_forwardFinding pH The hydrogen ion concentration of a sample of each substance is given. Calculate the pH of the substance. (a) Lemon juice: [H*]= 5.0 × 10 3 M (b) Tomato juice: [H*] = 3.2 x 10-4M (c) Seawater: [H*] = 5.0 × 10-9 M %3D %3Darrow_forwardpH of 0.01 M formic acid HCOOH (an ingredient from Texas fire ants, Ka= 2.1x10-4, similar to HAc): (Using ICE table approach with approximation) (a) [OH-] =1.00x10-2(M) (b) [H+] =1.45x10-3(M) (c) [H+] =1.00x10-2(M) (d) [H+] = 0.01 (M) (e) [H+] =1.86x10-3(M)arrow_forward
- Calculate the pH and the pOH of each of the following solutions at 25°C for which the substances ionize completely. (Assume Kw = 1.01 ✕ 10−14.) (a) 0.185 M HCl (b) 0.0131 M NaOH (c) 2.9 M HNO3 (d) 0.0039 M Ca(OH)2arrow_forwardThe hydrogen ion concentration of a sample of each substance is given. Calculate the pH of the substance. (Round your answers to one decimal place.) (a) Lemon Juice: [H+] = 5.0 × 10−3 M(b) Tomato Juice: [H+] = 3.2 × 10−4M (c) Hominy (lye): [H+] = 3.9 × 10−13Marrow_forward4.Indicate whether the following solutions are acidic (A), basic (B), or neutral (N). (a)pH 8.6 (c) [OH –] = 1 x 10 -7M (b)pH 3.1( d) [H3O+] = 9.7 x 10 -4Marrow_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 egg whites is 8.3. Calculate the concentration of hydrogen ions in moles per liter (M). [H*] = M (B) The pH of lemon juice is 2.0. Calculate the concentration of hydrogen ions in moles per liter (M). [H+] = Marrow_forwardCalculate the [OH-] in each of the following solutions: (a) [H+] = 4.0 × 10-9 [OH-] = × 10 (b) [H+] = 1.2 × 10-5 [OH-] = × 10 (c) 1.25 M HCN [OH-] = x 10 M (d) 0.333 M NaOH[OH-] =arrow_forwardCalculate the pH of each solution.(a) [H3O+] = 1.7 * 10-8 M(b) [H3O+] = 1.0 * 10-7 M(c) [H3O+] = 2.2 * 10-6 M(d) [H3O+] = 7.4 * 10-4 Marrow_forward
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