A.當(dāng)xB→0,γB→1 B.當(dāng)xB→1,γB→1 C.當(dāng)xB→0,γB→0 D.當(dāng)xB→1,γB→0
在25℃和標(biāo)準(zhǔn)壓力下,測(cè)得葡萄糖和麥芽糖的燃燒熱ΔcHm0為-2816kJ·mol-1和-5648kJ·mol-1。試求此條件下,0.018kg葡萄糖按下列反應(yīng)方程式轉(zhuǎn)化為麥芽糖的焓變是多少? 2C6H12O6(s)→C12H22O11(s)+H2O(l)
A. B. C. D.