The standard Gibbs energy of reaction, ÄG°, for the dissociation of phenol is 56.4 kJ mol-1 at 298 K. Calculate the pKa of phenol.

a.

9.88

c.

4.12

b.

22.8

d.

5.24

Sucrose is a non volatile, non-ionizing solute in water. Determine the vapor pressure lowering, at 27 degrees Celsius, of a solution of 75.0 grams sucrose, C12H22O11 dissolved in 180 grams of water.

How many grams of Br contain 8.94 * 1021 atoms of atomic bromine?

Why do scientists use stirbars in the laboratory? a. to cool a solution b. to heat a solution c. to decrease the surface area of a solute d. to agitate a solution

Identify the activity that belongs in the field of chemistry. A. developing medicines B. analysis of a compound C. production of a new plastic D. all of the above

How long does it take for light to travel?

What statement correctly defines dynamic equilibrium

Will Al and s for an ionic compound

The radioactivity due to carbon-14 measured in a piece of a wooden casket from an ancient burial site was found to produce 20 counts per minute from a given sample, whereas the same amount of carbon from a piece of living wood produced 160 counts

How do the amino acids lysine and alanine combine to form a dipeptide?

Does an oxygen atom form two covalent bonds?