Homework Answers
2)
a) 0.500 M NaBr .
here NaBr is the salt of strong acid and strong base.
strong acid and strong base salt pH does not depend on concentration.
so the
pH = 7.00
pOH = 7.00
b)
0.357 M Ca(NO3)2.
Ca(NO3)2 is a salt of strong base and strong acid. so pH = 7.00
pH = 7.00
pOH = 7.00
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2. For each of the following aqueous solutions of ionic compounds, calculate the pH and pOH;...
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Calculate the pH and pOH of the following aqueous solutions: (a) 0.15 mol·L–1 CH3COOH(aq); (b) 0.15...
Calculate the pH and pOH of the following aqueous solutions: (a) 0.15 mol·L–1 CH3COOH(aq); (b) 0.15 mol·L–1 CCl3COOH (aq); (c) 0.15 mol·L–1 HCOOH(aq). When the pH of a 0.10 mol·L–1 HClO2 aqueous solution was measured, it was found to be 1.2. What are the values of Ka and pKa of chlorous acid? (b) The pH of a 0.10 mol·L–1 propylamine, C3H7NH2, aqueous solution was measured as 11.86. What are the values of Kb and pKb of propylamine?
Activity #2 Calculate the pH of the following basic solutions. 1. Calculate the pH and pOH...
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Calculate the pOH and pH of the following aqueous solutions at 25 degrees Celcius (a) 0.0615 M LiOH (b) 0.0441 M Ba(OH)2 (c) 0.25 M NaOH
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Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF) 7.2x10-4; Ka ([Al(H20).]+)7.9x10-6; Ka (H3PO4)=7.5x10-2: Ka (HPO42-) =3.6x10-13; Ka (HCI)=Huge; Ka(Na+)=tiny; Ka(Cl-)tiny; Kb(NH3)=1.8x10-5; Kw=1x10-14 1) Calculate the pH of aqueous 0.25M HCl and 0.25M HF solutions. 2) Complete the following tables for aqueous solutions of conjugate acid-base pKa pKb Kb 1.3x10-4 35 3) Complete the following table for aqueous solutions DHL TH+) OH) pOH 1x102 4) Calculate the pH of aqueous 0.15M Ba(OH)2 and...
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help with question 2
Write the net ionic equation for the reaction between aqueous solutions of a) sodium acetate (NaCH$O2) and nitric acid. 1. b) hydrobromic acid and strontium hydroxide. c) hypochlorous acid and sodium cyanide. d) sodium hydroxide and nitrous acid. Calculate K for the reactions in Question 1. a) 2. b) d) 3. Calculate [H'1 and pH in a solution in which [NH4] is 0.500 M and [NH;] is a) 0.50 M b) 0.20 M Ps w P...
Calculate [OH − ], pOH, and pH for each of the following. (Assume that all solutions...
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Activity #2 Calculate the pH of the following basic solutions. 1. Calculate the pH and pOH of a 0.200 M Ca(OH)2 2. Calculate the equilibrium concentrations for [OH-], [HB+), and [B], the pH and pOH for a 0.200 M pyridine solution. (CsH5N) Kb = 1.4 X 10-9 3. Calculate the equilibrium concentrations for [OH-], [HB], and [B], the pH and pOH for a 0.200 M methylamine. (CH3NH2) Kb = 4.4 X 10-4 4. Calculate the equilibrium concentrations for [OH-], [HB+],...
Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF) 7.2x10-4; Ka ([Al(H20).]+)7.9x10-6; Ka (H3PO4)=7.5x10-2: Ka (HPO42-) =3.6x10-13; Ka (HCI)=Huge; Ka(Na+)=tiny; Ka(Cl-)tiny; Kb(NH3)=1.8x10-5; Kw=1x10-14 1) Calculate the pH of aqueous 0.25M HCl and 0.25M HF solutions. 2) Complete the following tables for aqueous solutions of conjugate acid-base pKa pKb Kb 1.3x10-4 35 3) Complete the following table for aqueous solutions DHL TH+) OH) pOH 1x102 4) Calculate the pH of aqueous 0.15M Ba(OH)2 and...
help with question 2
Write the net ionic equation for the reaction between aqueous solutions of a) sodium acetate (NaCH$O2) and nitric acid. 1. b) hydrobromic acid and strontium hydroxide. c) hypochlorous acid and sodium cyanide. d) sodium hydroxide and nitrous acid. Calculate K for the reactions in Question 1. a) 2. b) d) 3. Calculate [H'1 and pH in a solution in which [NH4] is 0.500 M and [NH;] is a) 0.50 M b) 0.20 M Ps w P...
UN CUNCILIULUNU 64. Calculate the pH and the pOH of each of the following solutions at 25 C for which the substances ionize completely: (a) 0.200 M HCI (b) 0.0143 M HCIO (c) An acid that contains 5.3 x 102 M H30* (d) An acid that contains 0.0031 M H30 65. Calculate the pH and the pOH of each of the following solutions at 25°C for which the substances ionize completely: (a) 0.000259 M HCIO4 (b) 0.21 M NaOH (c)...
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