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普适气体恒量R,是物理学中的主要常数之一。这里介绍一种适合中学用的实验方法,供参考。一、实验原理质量为m千克、摩尔质量为μ千克/摩尔的理想气体,其状态方程为:(PV)/T=m/μR 用电解水器电解水时,在正负电极上分别析出氧气和氢气,并分别收集在电解水器的两支集气管里。它们的压强P、体积V以及绝对温度T可用常规方法测定。其质量可根据法拉第电解第一定律和第二定律计算,即:
Pervasive gas constant R, is one of the major constants in physics. Here is a suitable experimental method for secondary school, for reference. First, the experimental principle The mass of m kg, the molar mass of mu kg / mole of the ideal gas, the equation of state: (PV) / T = m / μR electrolyzed water with electrolyzer, the positive and negative electrodes were isolated oxygen And hydrogen, and were collected in the two water collection tube in the water heater. Their pressure P, volume V and absolute temperature T can be determined by conventional methods. Its quality can be calculated according to the first law of Faraday electrolysis and the second law, namely: