What is the universal gas constant (R) value in L atm / mol K?

Study for the ALEKS Placement Chemistry Exam. Review flashcards and multiple choice questions, each with hints and explanations. Get ready for your chemistry exam!

The universal gas constant (R) is a fundamental constant used in many gas laws and equations, including the Ideal Gas Law, which states that PV = nRT. In this equation, P represents pressure, V represents volume, n is the number of moles of gas, T is the temperature in Kelvin, and R is the universal gas constant.

The correct value for R in the units of L atm / mol K is approximately 0.08206. This value allows for calculations involving gases under various conditions of temperature and pressure. The significance of this specific value is that it standardizes the behavior of an ideal gas when performing calculations.

Other values provided do not match this unit combination or standard value typically employed in chemistry, making them unsuitable for use in the Ideal Gas Law and similar equations. For instance, the value of 8.314 is often used in terms of J/(mol K), which relates to energy rather than pressure-volume terms. Thus, understanding the context of the gas constant and its appropriate units is crucial in applying the Ideal Gas Law and other related calculations effectively.

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