A.零级
B.一级
C.3/2级
D.二级
100℃时下列反应的Kθ=8.1×10-9,=125.6J·mol·K-1.计算:
(1)100℃,总压为200KPa时COCl2的解离度;
(2)100℃下上述反应的;
(3)总压为200kPa,COCl2的解离度为0.1%时的温度,设ΔTGp,m=0.
A sample of D-ribose(C5H10O5) with mass 0. 727 g was weighed into a calorimeter and then ignited in presence of excess oxygen. The temperature rose by 0.910 K when the sample was combusted. In another separated experiment in the same calorimeter the combustion of 0. 825 g of benzoic acid,for which the ΔcUΘm= 3251 kJ·mol-1,gave a temperature rise of 1.940 K. Calculate the ΔrUΘmand ΔrHΘmof D-ribose combusted.