2010F - CHEM 126101 Chapter 16 Regular Homework Acids I

2010F CHEM 126101 - 10F CHEM 126101 GEN CHEMISTRY II You are logged in as Andrew Sindt(Logout You are here NJIT 2010F CHEM 126101 Quizzes Chapter

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10F - CHEM 126101 - GEN CHEMISTRY II You are logged in as Andrew Sindt ( Logout ) You are here NJIT / ► 2010F - CHEM 126101 / ► Quizzes / ► Chapter 16 Regular Homework: Acids I / ► Review of attempt 7 Chapter 16 Regular Homework: Acids I Review of attempt 7 Started on Sunday, 17 October 2010, 11:51 PM Completed on Sunday, 17 October 2010, 11:53 PM Time taken 1 min 27 secs Finish review
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Marks 22/22 Grade 10 out of a maximum of 10 ( 100 %) Question 1 Marks: 1 Calculate the pH of a solution made by adding 49 g of sodium acetate, NaCH 3 COO, to 17 g of acetic acid, CH 3 COOH, and dissolving in water to make 600. mL of solution. Hint given in feedback. The K a for CH 3 COOH is 1.8 x 10 -5 M. As usual, report pH to 2 decimal places. Answer: What kind of solution does this make? . . . It is a buffer solution! Correct Marks for this submission: 1/1. Question 2 Marks: 1 Calculate the pH of a solution made by adding 78 g of sodium acetate, NaCH 3 COO, to 32 g of acetic acid, CH 3 COOH, and dissolving in water to make 900. mL of solution. Answer: Correct Marks for this submission: 1/1. Question 3 Marks: 1 Calculate the pH of a solution made by adding 44.0 g of sodium formate, NaHCOO, to 300. mL of 0.21 M formic acid, HCOOH. Hint what kind of solution is made? The K a for HCOOH is 1.8 x 10 -4 M. As usual, report pH to 2 decimal places. Answer:
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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 - 10F CHEM 126101 GEN CHEMISTRY II You are logged in as Andrew Sindt(Logout You are here NJIT 2010F CHEM 126101 Quizzes Chapter

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