Research carried out to solve a problem is referred to

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the ratio of the conjugate base to the acid required to attain the desired ph.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.