Anh ch (LE QUY DON) 2 11

... (kJ.mol-1) ∆So (J.mol-1.K-1) H3PO4(dd) - 1288 158 H2PO 4-( dd) - 1296 90 HPO4 2-( dd) - 1292 - 33 PO4 3-( dd) - 1277 - 220 H+ + OH- → H2O - 56 81 I.2.1 Tính ∆Go phản ứng trung hoà nấc H3PO4 OH- I.2.2 ... H+ + OH- → H2O Ta có: ∆Ho = ∆Ho(H2O) - ∆Ho(H+) - ∆Ho(OH-) ∆Ho = ∆Ho(H2O) - ∆Ho(OH-) = - 56 KJ.mol-1 (Vì ∆Ho(H+) = 0) ∆So = So(H2O) - So(H...

Ngày tải lên: 09/06/2013, 01:26

... you think about it, what? B How good about the film you think so? C What you think about the film? 15 A There now be many things we should them B We’ve got a lot of things to now C A lot of things ... printed before it 36 I haven't eaten this kind of food before A This is the first time I’ve eaten this kind of food B I haven’t eaten this kind of food already C This is the first kind of food I...

Ngày tải lên: 12/07/2014, 10:00

... AgNO3 vào dd FeCl3 Thí nghiệm ứng với sơ đồ sau : A 1-a, 2- c, 3-b B 1-a, 2- b, 3-c Câu 12 : Cho sơ đồ phản ứng Cl ,as C 1-b, 2- a, 3-c o D 1-c, 2- b, 3-a o + NaOH dd NaOH, t CuO, t CH3COONa  A  ... NaOH 1M Sau phản ứng hoàn toàn thu 28 ,5 gam muối Giá trị m là: A 11 ,25 2 gam B 11, 525 gam C 12, 2 52 gam D 12, 525 gam Câu 28 : Tên gọi polime có công thức (-CH2-CH 2- ) n A pol...

Ngày tải lên: 25/07/2015, 22:22

... great deal of questioning, he decided to come clean and tell the truth A admit B confess C agree D deny Question 11: He is a A capable of taking difficult decisions manager B manager capable ... write the lesson plan right after she returned home from the work Hardly had Question 67: It is said that the thief stole many valuable things in the house Many valuable things ... Einstein learned t...

Ngày tải lên: 23/09/2016, 23:26