{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

post-lab 9 ch 204 - obennoskey(blo242 Post-lab 9 Lyon(52635...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
obennoskey (blo242) – Post-lab 9 – Lyon – (52635) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Calculate the pH of a 0.180 M benzoic acid so- lution, C 6 H 5 COOH. The K a for C 6 H 5 COOH is 6.46 × 10 - 5 . 002 10.0 points Calculate the pH of a 0.180 M benzoic acid solution after 200.0 ml of 0.450 M sodium benzoate, C 6 H 5 COONa, is added to 600.0 ml of C 6 H 5 COOH. 003 10.0 points The pH of a solution of hypochlorous acid, HClO, was measured to be 3.89. Calculate the molarity of this solution. The K a for HClO is 3.0 × 10 - 8 . Answer in units of M. 004 10.0 points A solution made by mixing 45.0 ml of 0.360 M propionic acid, CH 3 CH 2 COOH, and 10.0 ml of 1.40 M sodium propionate, CH 3 CH 2 COONa, has a pH of 3.81. Calculate the corresponding value of K a for propionic acid. Your answer must be within ± 5.0% 005 10.0 points Calculate the pH of the solution from Problem 4 after 5.00 ml of 1.85 M NaOH is added to it.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}