CHM 2354 Study Guide - Midterm Guide: Sodium Sulfate, Acetic Acid, Ionic Strength

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 2354
• Professor: Maxim Berezovski

Document Summary

Sodium sulfate is slowly added to a solution containing 0. 0500 m ca2 (aq) and. What percentage of the ca2 (aq) can be precipitated from the ag (aq) by selective precipitation? however a more accurate determination can be made by using the equation, The activity coefficient (cid:523) (cid:524) of a neutral molecule is typically approximated as (cid:883). (cid:882)(cid:882); log(y)=ku where k (cid:882). (cid:884) for organic molecules and (cid:586) is the ionic strength. Using the activity coefficients for h , a , and ha, calculate the value of the following concentration quotient for acetic acid (cid:523)(a c((cid:885)co(cid:884)((cid:524). You will need to look up the activity coefficients for h and a in a table. Find the concentration of i in 0. 050 m agno3 saturated with agi. A table of activity coefficients at various ionic strengths can be found here. Ignoring activities, determine the molar solubility of copper (i) azide (cun3) in a solution with a ph of 2. 309.