The value of the gas law constant,R,in units of L.kPa.mol^-¹.K^-¹ is A)62.4 B)0.0821 C)0.0752 D)7.62 E)8.31

Question

Quizplus · Accepted Answer

The value of the gas law constant R can be found by looking at the units given in the question. R has units of pressure (kPa), volume (L), and amount of substance (mol). Therefore, we need to find the product of the conversion factors that change kPa to atm (1 atm = 101.325 kPa), L to cm3 (1 L = 1000 cm3), and mol to moles (1 mol = 1 mol). The value of R can be calculated as follows:
R = (1 atm × 1000 cm3) / (1 mol × 101.325 kPa) = 0.0821 L⋅atm/mol⋅K. Therefore, the best choice is E.

The Value of the Gas Law Constant,R,in Units of L