Answer:
B. They are dimensionless ratios of the actual concentration or pressure divided by standard state concentration, which is 1 M for solutions and 1 bar for gases.
Explanation:
Activity of a substance is defined as the ratio of an effective concentration or an effective pressure to a standard state pressure or a standard state pressure. It is usually a unit less ratio.
Concentrations in an equilibrium constant are really dimensionless ratios of actual concentrations divided by standard state concentrations. Since standard states are 1 M for solutes, 1 bar for gases, and pure substances for solids and liquids, these are the units to be used.
Hence, activity is a fudge factor to ideal solutions that correct the true concentration. Activity of a gas and solute concentration is a ratio with no unit.
Answer: True
Explanation:
I just took the test and got it right
Answer:
Lead I think is one I'm not completely sure but I know they're similar in some ways
Use the clausius clapeyron formula:
<span>Ln (p1/p2) = (heat of vap) / (R = 8.314) [(1/t2)-(1/t1)] </span>
<span>Ln (p1/547)= (39300 j/mol) / (8.314) [(1/351.3 K) - (1/t1) </span>
<span>Ln (760/547) = (4726.97) [(2.85*10^-3) - (1/t1)] </span>
<span>760 mmhg = 1 atm!</span>
