1. Determine the ph of a solution prepared by mixing the equal volumes of 0.10M hydrochloric and 0.1M hydrofluoric acid? Ka for HF is 6.6x10 ^ -4
2. Determine the change in ph after addition of 10.0 ml of 1.0M sodium hydroxide to 90. ml of a 1.0 M NH3/1.0M NH4buffer? Where the ka for ammonia is 1.8 x 10 ^-5