CHM-201 Lab 5 (Rev 1-C12-17) Questions: Page 7 of 8 1. Vinegar is normally assumed to be a 5% acetic acid solution by weight (w/w) meaning that the concentration of acetic acid is 5 grams per 100 grams of solution. If you assume that the density of vinegar is 1.0 g/ml, calculate the percentage of acetic acid (w/w) in vinegar that you determined in this experiment. Determine the percent error if you assume the vinegar is exactly 5.0 grams of acetic acid per 100.0 grams of solution. 2. If your laboratory partner misread the procedure and added 100 mL of distilled water to the solid KHP rather than 50 mL of water (section 1.5), how would this affect the concentration of sodium I hydroxide solution that you measured? Explain briefly. my lab partner misread the freeidnite and added 10t Gomel y distilled water to the Solid KHP rather than 50 ml Eater, The Solution would be los concentrated. CHM-201 Lab 5 (Rev 1-C12-17) Page 8 of 8 3. If 20.00 ml. of a solution of hydrochloric acid of unknown concentration was titrated with 0.0818 M sodium hydroxide solution and the endpoint was found after 29.80 ml. of sodium hydroxide solution was added, what was the concentration of the hydrochloric acid solution used? 4. Redo the numerical problem in question 3 above substituting sulfuric acid (H2SO4) for HCI.