CAJ | 학술논문

现行的通过量气体体积法测定过氧化氢分解反应速度常数的装置，普遍存在读数不准的问题．本文提出了一种新的测定装置，利用该装置，可以提前知道各时刻被测体系产生的氧气体积，操作方便，读数准确可靠．In（V∞-VT）～T直线的线性相关系数，最差的为-0．9996．多数在4个“9”以上．当反应温度分别为15、20、25、30℃时，其速度常数丘分别为2．7534×10^-4、4．1807×10^-4、6．1249×10^-4、9．2459×10^-4s^-1．3次测定结果相-1对误差均不大于0．6％．直线Ink^-～1/T的线性相关系数为-0．9998，由此求得的E15-30℃=58．33kJ·mol^-1．与文献值的相对偏差为0．53％．
현행적통과량기체체적법측정과양화경분해반응속도상수적장치，보편존재독수불준적문제．본문제출료일충신적측정장치，이용해장치，가이제전지도각시각피측체계산생적양기체적，조작방편，독수준학가고．In（V∞-VT）～T직선적선성상관계수，최차적위-0．9996．다수재4개“9”이상．당반응온도분별위15、20、25、30℃시，기속도상수구분별위2．7534×10^-4、4．1807×10^-4、6．1249×10^-4、9．2459×10^-4s^-1．3차측정결과상-1대오차균불대우0．6％．직선Ink^-～1/T적선성상관계수위-0．9998，유차구득적E15-30℃=58．33kJ·mol^-1．여문헌치적상대편차위0．53％．
Nowadays the apparatus which is used to measure rate constant of H2O2 decomposition are not usually accurate, according to the method of measuring the gas volume. In this paper, a new measuring apparatus is proposed and the volume of oxygen in different reaction time is predetermined. The method is proved to be operationally simple, accurate and reliable. The linear correlation of straight line In （ V∞ - VT ） -T is not less than -0.9996. The rate constants when the reaction temperature are 15℃, 20℃, 25℃ and 30℃ measure 2. 7534 ×10^-4, 4. 1807×10^-4 , 6. 1249 ×10^-4 and 9. 2459 ×10^-4s^ -1 respectively. The relative errors of all 3 measurements are less than 0.6%. The linear correlation of the straight line Ink^- -1/T is -0. 9998. The activation energy of 15 - 30℃ is 58.33 kJ · mol^-1, the relative divergence compared with document value is 0. 53%.