TEMPERATURE IN DEGREES CELCIUS (°C)TIME(t) IT TAKES FOR THE X TO BE OBSCURED IN SECONDS (s)MEAN TIME IN SECONDS(s)RATE OF REACTION (1/t)10°C10°C10°C168.50151.88166.36161.910.006220°C20°C20°C141.09132.09140.41137.850.007330°C30°C30°C72.2872.2570.7571.760.013940°C40°C40°C53.7954.8051.8253.220.018850°C50°C50°C35.2836.0933.3434.500.0287