Consider the following data on some weak acids and weak bases:
acid base
Ka name formula Kb name formula
6.8x10-4 hydrofluoric acid HF 1.8x10-5 ammonia NH3
4.9x10-10 hydrocyanic acid HCN 1.7x10-9 pyridine C5H5N
Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on.solution
a. 0.1 M NaCN
b. 0.1M NH4Br
c. 0.1M KF
d. 0.1M KBr
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Ответ:
When the fluid cools, the kinetic energy of the molecules decreases. This causes the molecules to slow down and move closer together. Since the molecules are closer together, the density of the fluid increases and the fluid sinks.
Explanation:
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