#Question id: 364
#Unit 1. Molecules and their Interaction Relevant to Biology
A solution contains 0.0000001 (10-7) moles of hydrogen ions [H+] per liter. Which of the following best describes this solution?
#Question id: 365
#Unit 1. Molecules and their Interaction Relevant to Biology
Water is a polar molecule: the oxygen atom with its unshared electrons carries a partial negative charge (δ−) of ___________, and the hydrogen atoms each carry a partial positive charge (δ+) of __________, where e is the charge of the electron.
#Question id: 366
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-10 M?
#Question id: 367
#Unit 1. Molecules and their Interaction Relevant to Biology
1.0 × 10^−4 mole of H+ (as HCl) is added to 1.0 liter of pure water. Determine the final pH of the solution.
#Question id: 368
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is true about the properties of aqueous solutions?
#Question id: 369
#Unit 1. Molecules and their Interaction Relevant to Biology
Calculate the pH of a 2.0 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. (pKa = 4.76)