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eda 17, what is the pOH ofa 0.0077 M KOH solution? A. 9.13 B. None of...
13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is a) a weak base b) a weak acid c) a strong base a strong acid e) a salt 14) In basic solution, a) [H30'> [OH] b) [H30 ]- [OH1 [Hs0)< [OH] d) (OH]<7.00 e) [OH] =OM 15) The pH of a 0.63 M aqueous solution of hypobromous acid, HBro, at 25°C is 4.17. What is the value of K for HBro? a2.0 x 10...
QUESTION 1 Calculate the volume of 0.5 M KOH solution in mL required to completely neutralize 25.0 mL of 0.1 M HNO3 solution (a) 25 (b) 5 (c) 10 (d) none of the choices is correct QUESTION 2 20 mL of 0.2 M NaOH solution is required to completely neutralize 20 mL of a standard H2SO4 solution (a) 0.1 M (b) 0.2 M (c) 0.5 M (d) None of the choices is correct Click Save and Submit to save and...
What is the pH of a 6.85 × 10−3 M weak acid solution, HA, if Ka = 4.5 × 10−6? Group of answer choices 1.2 4.8 9.1 3.8 6.5 What is the pOH of 4.50 × 10−4M HBr? Group of answer choices 10.7 6.7 1.7 12.3 3.3 What is the pH of a 9.67 × 10−3M solution of NaOH? Group of answer choices 13.0 4.6 12.0 9.4 2.0 A 6.5 × 10-2 M solution of a weak acid, HA, has...
7. Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? A. 0.36 B. 2.4 x 10-2 C. 7.8 x 10-3 D. 1.5 x 10-5 E. None of these choices are correct. 8. Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid? A. 1.1% B. 2.2% C. 4.8%...
a) What is the pH of a solution that consist of 0.20 M ammonia, NH3, and 0.20 M ammonium choride, NH4Cl? (Kb for ammonia is 1.8 x 10-5) b) 1.25 g of benzoic acid (C6H5CO2H) and 1.25 g of sodium benzoate (NaC6H5CO2) are dissolved in enough water to make 250 mL solution. Calculate the pH of the solution using the Handerson-Hasselbach equation (Ka for benzoic acid is 6.3 x 10-5). c) What is the pH after adding 82 mg of...
A buffer is prepared by mixing 200.0 mL of 0.1500 M NaOH with 200.0 mL of 0.200 M Benzoic Acid (a monoprotic carboxylic acid) in a 1-L volumetric flask and then diluted to volume with distilled deionized water. Calculate the pH of the buffer. Ka= 6.28 × 10−5and pKa= 4.01. A. 3.53 B. 4.01 C. 4.49 D. 7.00 E. 11.49
QUESTION A solution has [OH ]=59x 10-4 M. The pH of this solution is a. 5.39 b. 1.69 10-11 c 3.23 d. None of these e. 10.77 Caps Lock is on QUESTION 7 A solution has a pH of 3.99. The pOH of this solution is a. 3.99 b.4.09 c. 10.01 d. none of these e. 9.91
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for HNO2 nitrous acid - 4.0 x 10-4) a. 11.43 d.5.71 b. 7.00 e. 11.89 c. 8.29 - -
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28) a) What is the pH of a 0.159 M aqueous solution of ammonium iodide, NHAI pH- This Solution is acid, basic, or neutral b) What is the pH of a 0.250 M aqueous solution of sodium acetate, NaCH3COO? pH- This Solution is acid, basic, or neutral c) The substance benzoic acid (C6HsCOOH) is a weak acid (Ka - 6.3x10-s) What is the pH of a 0.123 M aqueous solution of sodium benzoate,...
is the pH and pOH of the acid solution with [H'] = 0.38 M? What is the [H30") and TOH concentration of an acid solution with pH = 5.5? 3. How many liters of 0.186 M of NaOH(aq) contain 0.135 mol of NaOH? If 0.123 g NaOH is dissolved in enough water to make 250.0 mL of solution, what is the molarity (M) of the sodium hydroxide solution? If 2.00 mL of 0.456 M NaOH is diluted to exactly 100...