Question 5 (2 points) Calculate the pH of a solution labelled 7.1 M HCl. Provide your...
Question 12 (2 points) ✓ Saved Calculate the pH of a solution labelled 0.73 M ammonia, NH3(aq), which is a weak monoprotic base. Kb(NH3) = 1.8 x 10-5. Use the 5% approximation rule. Provide your answer to two places after the decimal. Your Answer: Answers
Question 7 (2 points) A 3.0-ml sample of a 0.10 M HCl(aq) solution was mixed with a 4.8-mL sample of a 0.63 M HCl(aq) solution. Calculate the pH of the mixture. Provide your answer to the correct number of decimal places.
Question 8 (2 points) A 6.5-ml sample of a 0.11 M HCl(aq) solution was mixed with a 4.1-mL sample of a 0.70 M HCl(aq) solution. Calculate the pH of the mixture. Provide your answer to the correct number of decimal places. Your Answer: Answer Hide hint for Question 8 There is no reaction. You are simply mixing two solutions of the same acid. First calculate the molarity of the mixture and finally the pH of the mixture.
Question 7 (2 points) Calculate the pH of 0.0020 M Ca(OH)2 solution. Provide your answer to two places after the decimal. Your Answer: Answer
Question 15 (2 points) Calculate the pH of 0.0030 M Ca(OH)2 solution. Provide your answer to two places after the decimal. Your Answer: Answer
At 25 °C calculate the pH of a solution in which [OH^ - ]=7.1*10^ -3 M Express your answer to two decimal places. Part B At 25 °C calculate the pH of a solution in which [OH-] = 7.1 x 10-3 M. Express your answer to two decimal places. V ALQ R O ? pH = Submit Previous Answers Request Answer
A 4.4-mL sample of a 0.14 M HCl(aq) solution was mixed with a 6.3-mL sample of a 0.68 M HCl(aq) solution. Calculate the pH of the mixture. Provide your answer to the correct number of decimal places. Your Answer: Answer Hide hint for Question 16 There is no reaction. You are simply mixing two solutions of the same acid. First calculate the molarity of the mixture and finally the pH of the mixture.
5. Calculate the pH of a 0.04 M HCl solution. Compare to the pH found in problem 4 Note: this is not a buffer! 6. What properties of a buffer solution provides for a solution with a higher capacity to withstand changes in pH? Provide at least 3.
35 d 2 points Calculate the hydronium concentration of a 5.59x10-5 M HCl solution. Enter your answer as xx*10^# (where x represents dieits of the number and # represents the exponent
Part C a solution that is 4.0×10−2 M in HClO4 and 5.3×10−2 M in HCl Express your answer to two decimal places. pH = SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining; no points deducted Part D a solution that is 1.11% HCl by mass (Assume a density of 1.01 g/mL for the solution.) Express your answer to three decimal places. pH =