2010F - CHEM 126101 Chapter 15 Regular Homework Intro. Acids

2010F - CHEM 126101 Chapter 15 Regular Homework Intro. Acids

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Unformatted text preview: 10F - CHEM 126101 - GEN CHEMISTRY II You are logged in as Andrew Sindt ( Logout ) You are here NJIT / 2010F - CHEM 126101 / Quizzes / Chapter 15 Regular Homework: Intro. Acids / Review of attempt 4 Chapter 15 Regular Homework: Intro. Acids Review of attempt 4 Started on Thursday, 7 October 2010, 09:40 PM Completed on Thursday, 7 October 2010, 09:45 PM Time taken 5 mins Finish review Marks 43/43 Grade 15 out of a maximum of 15 ( 100 %) Question 1 Marks: 1 What is the pH of a solution where the [H + ] =4.00 x 10 (-2) M? REPORT pH TO 2 DECIMAL PLACES. Answer: Correct Marks for this submission: 1/1. Question 2 Marks: 1 Is the above pH acidic or basic? Choose one answer. a. Acidic b. Basic Correct Marks for this submission: 1/1. Question 3 Marks: 1 What is the [H + ] concentration if the pH is 9.39? Answer: Correct Marks for this submission: 1/1. Question 4 Marks: 1 Is the above pH acidic or basic? Choose one answer. a. Acidic b. basic Correct Marks for this submission: 1/1. Question 5 Marks: 1 What is the [H + ] concentration if the pOH is 9.65? Answer: Correct Marks for this submission: 1/1. Question 6 Marks: 1 Is the above pH acidic or basic? Choose one answer. a. Acidic b. Basic Correct Marks for this submission: 1/1. Question 7 Marks: 1 What is the [H + ] concentration if the [OH- ] concentration is 4.40 x 10-11 M? Answer: Correct Marks for this submission: 1/1. Question 8 Marks: 1 Is the above [H + ] concentration acidic or basic? Choose one answer. a. acidic b. Basic Correct Marks for this submission: 1/1. Question 9 Marks: 1 Calculate the pH of 0.091 M HClO 4 . Answer: Correct Marks for this submission: 1/1. Question 10 Marks: 1 Calculate the pH of 0.510 M HNO 3 . (For pH's < 1 use 3 significant figures to avoid Moodle problem.) Answer: Correct Marks for this submission: 1/1. Question 11 Marks: 1 Calculate the pH of 0.0013 M NaOH. Answer: Correct Marks for this submission: 1/1. Question 12 Marks: 1 Calculate the pH of 0.0067 M Ba(OH) 2 . Careful. Answer: Correct Marks for this submission: 1/1. Question 13 Marks: 1 Calculate the pOH of 0.020 M LiOH. Answer: Correct Marks for this submission: 1/1. Question 14 Marks: 1 Calculate the pOH of 1.32 M HI. Answer: Correct Marks for this submission: 1/1. Question 15 Marks: 1 Calculate the pOH of 0.00095 M Sr(OH) 2 . Answer: Correct Marks for this submission: 1/1. Question 16 Marks: 1 When 1.00 g of thiamine hydrochloride (also called vitamin B1 hydrochloride) is dissolved in water, then diluted to 10.00 mL, the pH of the resulting solution is 4.50. The formula weight of thiamine hydrochloride is 337.3 g/mol. Calculate K a . Answer: Correct Marks for this submission: 1/1. Question 17 Marks: 1 When 0.0017 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.78. Calculate K a ....
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This note was uploaded on 11/09/2010 for the course CHEM Chem taught by Professor Petrova during the Spring '09 term at NJIT.

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2010F - CHEM 126101 Chapter 15 Regular Homework Intro. Acids

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