26.試比較下列中和反應放熱的大小?甲:0.2M HCl 5mL+0.1M NaOH 10mL,乙:0.05M HCl 20mL+0.1M NH3 10mL, 丙:0.1M H2SO4 10mL+0.
34.有關膠體溶液的敘述,何者不正確? (A)構成溶質的粒子為高分子,或粒子結合、離子吸附溶劑分子所形成的原子團 (B)相當於溶劑的是分散媒 (C)廷得耳效應是膠體粒子使光線散射之故 (D)膠體溶液中
36.下列鉛的氧化物與顏色的關係何者為正確? (A) PbO2-黃色,Pb3O4-棕色,PbCrO4-紅色 (B)PbO2-紅色,Pb3O4-棕色,PbCrO4-黃色 (C)PbO2-棕色,Pb3O4
Which of the following is an example of a homogeneous equilibrium?(A)NH4NO3(s) N2O(g) + 2H2O(g)(B)H2
2. As water is heated, its pH decreases. This means that(A)the water is no longer neutral(B)[H+] >
4. Buffers in the human body(A)help to maintain a constant blood pH.(B)help to keep the body tempera
5. One milliliter (1.00 mL) of acid taken from a lead storage battery is pipetted into a flask. Wate
7. For which process is ΔS negative?(A)evaporation of 1 mol of CCl4(l)(B)mixing 5 mL ethanol with 25
8. The reaction below occurs in basic solution. In the balanced equation, what is the sum of the coe
10. A sky diver jumps out of a plane. Before reachingterminal velocity, her(A)displacement remains c