... 11NC – chương HIDROCACBON no CO + PdCl2 + H2O CO2 + Pd + 2HCl Ca(OH)2 CaCO3(kết tủa) CO2 + + H2O Bàitập nhận biết: 1) Trình bày phương pháp hóa học để phân biệt khí không màu propan xiclopropan? ... phức tạp sản phẩm C, CO, CO2 , H2, sản phẩm gồm CO2 , H2O đồng thời dư hydrocacbon Loại : Hỗn hợp gồm hydrocacbon khí vô Bàitập mẫu : 1) Tỉ khối hỗn hợp khí X gồm: H2, CH4, CO H2 7,8 Để đốt cháy ... 2H2 + O2 2H2O x x/2 CH4 + 2O2 CO2 + 2H2O y 2y 2CO + O2 2CO2 z z/2 Giả sử: x + y + z = (mol) (1) Nhóm – Hóa 3B Page 13 Phân loại phương pháp giảitập HH lớp 11NC – chương HIDROCACBON no dX/H2...
... : MNPQ hình thang vuông , đường cao MN b Tính diện tích hình thang theo a x Ta có : S MNPQ = ( MQ + NP ).MN Tính MN : Xét tam giác ABC Trang 24 AB AB BC = ⇒ BC cos B ⇒ BC = 2a ⇒ BO = a ˆ B ... ⊥ SC mà MD ⊥ ( SHC ) nên HK ⊥ MD hay HK khoảng cách hai đường thẳng MD SC + Mặt khác : cos DCN = ⇒ HC = cos DCN × = CD = + tg DCN 1 1+ ÷ 2 = 5 5a Áp dụng hệ thức lượng Ta có : HK = SH ×HC ... • Trong (SAC), gọi F = IE ∩ SC F ∈ SC F ∈ IE mà IE ⊂ ( IJK) ⇒ F ∈ ( IJK) Vậy : F = SC ∩ ( IJK ) 11. Cho tứ diện ABCD Trên AC AD lấy hai điểm M,N cho MN không song song với CD Gọi O điểm bên tam...
... H2SO4 -> Br2 + Bai 26 PHAN LOAI PHAN Q N G TRONG HOA HOC VO CO 4.21 Cac phan ftng hod hgp A diu la phan ftng oxi hod - khft B diu khdng phai la phan ftng oxi hod - khft C cd thi la phan ftng oxi ... thftc phan tft cua MX2 13 Chuang • BANG TUAN HOAN CAC NGUYEN TO HOA HOC VA DINH LUAT TUAN HOAN Bai BANG TUAN HOAN CAC NGUYEN TO HOA HOC 2.1 Hay cho bidt y nghia cua mdt d nguyen td bang tudn hoan ... A Trong phan ihig hoa hgc sd mol nguyen tit cac nguyen td co mat phan ling khdng thay ddi cac nguyen td dugc bao toan B Trong phan iing hoa hgc sd mol nguyen tit cac nguyen td co mat phan ling...
... nhiệt độ cao, R R R R R R R R cần dùng hết 2,24 lít khí CO đkc Tính khối lượng sắt thu Cách giải thơng minh: + Phát vấn đề: Khi khử oxit sắt, CO lấy oxi oxit sắt để tạo Fe CO : CO + O → CO Số ... 112 T T 3.1 Mục đích thực nghiệm 112 T T 3.2 Nội dung thực nghiệm 112 T T 3.3 Đối tượng thực nghiệm 112 T T 3.4 Tiến hành thực nghiệm 112 T T ... Na (r) + 1/2Cl (k) → NaCl (r) ΔH = - 411, 1 kJ H (k) + 1/2O (k) → H O (l) ΔH = - 285,83 kJ R R R R R R R R CaCO (r) R CaO (r) + + 1/2O (k) → H (k) R → R R R CO (k) R R H O (k) R R R ΔH = + 176 kJ...
... A HCO3 , CH3COO─ B Zn(OH)2, Al2O3, HSO − − C NH + , HCO , CH3COO─ − D Al(OH)3, ZnO, HCO , H2O Câu 9: Phương trình điện li CH3COOH CH3COOH € CH3COO– + H+ K [CH 3COOH] [CH 3COO- ][H + ] [CH3COO- ... A CO3 − , CH3COO– + B ZnO, Al2O3, HSO − , NH 4 − + C HCO3 , NH , CH3COO– − D ZnO, Al2O3, HCO3 , H2O Câu 2: Theo định nghĩa axit – bazơ Bron–stêt, chất ion thuộc dãy sau bazơ? A CO3 − , CH3COO– ... NaCl, NaNO 3, Na 2CO3 , K2S, CH3COONa, NH4Cl, ZnCl2, muối không bị thủy phân A NaCl, NaNO3 B CH3COONa, Na 2CO3 , ZnCl2, NH4Cl C NaCl, NaNO3, ZnCl2 D K2S, NaCl, NaNO3, Na 2CO3 , CH3COONa Câu 5: Cho...
... storm developed A than B when C that D since 24 –“ ?” –“Very much.” A Did you enjoy the concert B How was the concert C Did many people go to the concert D How many people went to the concert ... demonstration 26 The trouble with Tom is that he A is always complaining B always complains C has always complained D will always complain 27 I’d rather you up so late A not stay B not stayed ... time in different places Movies have become a gigantic industry In fact, motion pictures could not exist (34) many of the scientific and technical discoveries made since the late 1800's For...
... the properties of lines, curves, shapes, and surfaces A it is concerned with B that concerned with C concerned with D its concerns are 21 “Is it okay to smoke here?” – “ ” A You can B ... Because noise is unavoidable in a complex, industrial society, we are constantly responding in the same ways that we would respond to danger Recently, researchers have concluded that noise and our ... of Japan is yen A coin B currency C money D cash 28 You need more exercise; you should _ jogging A carry out B take in C take up D carry on 29 I was born in Scotland but I _ in Northern...
... vast, nationwide audience at a low cost per viewer For example, a 30-second commercial on a TV network may cost $1 million But if 50 million viewers watch the commercial, the advertiser pays only ... TV commercials consist of short spot announcements, most of which last 30 seconds The commercials are usually run in groups of three to six Television networks and stations generally limit commercial ... D because 22 The completion of the tunnel has been owing to a strike A held on B kept up C held up D kept on 23 In many developing countries, wood as the primary fuel for cooking and heating...
... uneducated man considerably Therefore, intellectual workers have to study, this is a matter, of course, but manual workers must also gain an education In civilized countries, compulsory education ... take? 30 - - Yes, I’d love one A Would you like a coffee? B Would you like some sugar? C Do you like coffee? D Are you hungry? III Reading Complete the passage below by choosing the best option ... many Asian countries They are wise and powerful creatures They are associated with the gods and the emperors They can give advice, and they represent good luck However, they can also become angry...
... personality come from? Many people believe that your time of birth influences your personality The Chinese horoscope is one tradition that connects your personality with the year of your birth According ... greetings B wishes C compliments D congratulations Passage Đọc kỹ đoạn văn trả lời câu hỏi (bằng cách chọn phương án ứng với A B, C, D) từ câu 36 đến 40: THE CHINESE HOROSCOPE AND YOUR PERSONALITY ... the year of your birth According to the Chinese horoscope, each year is represented by a different animal There are twelve animals in the horoscope, and they repeat every twelve years For example,...