Final answer:
The normal boiling point of dichloroethane, CH2Cl2, is closest to 353 K based on provided data, and discrepancies between this and actual boiling point values can be attributed to experimental errors or variances in atmospheric conditions. The correct option is C.
Step-by-step explanation:
To determine the normal boiling point of dichloroethane (CH2Cl2), we reference the provided vapor pressure-temperature value (T1 = 80.1 °C = 353.3 K, P1 = 101.3 kPa, ΔHvap = 30.8 kJ/mol) as a starting point.
Using the Clausius-Clapeyron equation, the boiling point corresponds to the temperature at which the vapor pressure equals atmospheric pressure at sea level. Based on this information, the closest answer to the normal boiling point of CH2Cl2 among the given options would be 353 K.
Upon finding the actual boiling point from a reliable source online, a percent error in temperature can be calculated by taking the absolute difference between the experimental and theoretical values, dividing by the theoretical value, and then multiplying by 100.
Various factors can cause these values to differ, including experimental error, the precision of measurements, or deviations from standard atmospheric conditions.