Question 10 (of 15) alue: 00 points 3 attempts left Check work my Enter your answer...
value 1.00 points 1 attempts left Check my work Enter your answer in the provided box. A buffer solution is prepared in such a way that the concentration of propanoic acid is 1.92 x 10 Mand the concentration of sodium propanoate is 1.51 x 10° M. If the buffer equilibrium is described by CH3COOH(aq) + H20(1) = H2O*(aq) + CH3C00 (aq) Gul propanoic acid propanoate ion with K = 1.34 x 105 calculate the pH of the solution. pH =...
3 attempts left Check my work Enter your answer in the provided box. ints The pH of a bicarbonate-carbonic acid buffer is 7.06. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-). (Kg, of carbonic acid is 4.2 x 10-7.) eBook [H,C03] [HCO3-] 00 3 attempts left Check my work Enter your answer in the provided box. 01 ints Calculate the pH at the equivalence point in the titration of 50.0 mL...
3 attempts left Check my work Enter your answer in the provided box. Determine the pH at 25°C of a solution prepared by dissolving 0.0650 mole of sodium acetate in 1.00 L of 0.250 M acetic acid. (Assume that the addition of sodium acetate does not change the volume of the solution.)
Question 11 of 15) value 1.00 points 3 attempts left Check my work Enter your answer in the provided box. solution of NaOH. Calculate the pH of a 1.0 x 10M pH= Question 14 (of 15) value: 1.00 points 3 attempts left Check my work Enter your answer in the provided box. Calculate the pH of a solution with a H2O concentration of: 1.8 x 10-6 M
WILL GIVE THUMBS UP 3 attempts left Check my work Enter your answer in the provided box. points A sample of 0.5760 g of an unknown compound containing barium ions (Ba) is dissolved in water and treated with an excess of Na,C0y. If the mass of the BaCO, precipitate formed is 0.5343 . what is the percent by mass of Ba in the original unknown compound? ebook Print References 3 attempts left Check my work Enter your answer in the...
3 attempts left Check my work Enter your answer in the provided box. Sodium stearate (C17H3sCOONa) is a major component of bar soap. The K, of the stearic acid is 1.3 x 10 What is the pH of 10.0 mL of a solution containing 4.10 g of sodium stearate?
Question 15 (of 15) value: 1.00 points 3 attempts left Check my work Enter your answer in the box provided. Calculate the pH of a 1.0 x 10 M solution of HCI pH =
3 attempts left Check my work Enter your answer in the provided box. What is the component concentration ratio, [CH CO0 VICH COOHl, of a buffer that has a pH of 5.3902 (K of CH,COOH 1.8 x 10 5)
will give thumbs up! 3 attempts left Check my work Enter your answer in the provided box. points Water is added to 75.0 mL of a 0.992 M KNO, solution until the volume of the solution is exactly 250 mL. What is the concentration of the final solution? eBook Print References 3 attempts left Check my work Enter your answer in the provided box. points A volume of 54.2 mL of a 0.468 M Ca(NO) solution is mixed with 75.5...
15 attempts left Check my work Enter your answer in the provided box. The pH of a sodium acetate-acetic acid buffer is 4.40. Calculate the ratio [CH3C00"] [CH3COOH).