The value of ka in water at 25 °c for propionic acid (c2h5co2h) is 3.4 x 10-5 m. what is the ph of a 0.020 m aqueous solution of propionic acid?

List four observations that indicate that a chemical reaction may be taking place

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary