问题2：月用什么容器盛放HF(aq) ?应注意什么？Si0,+4HF→SiF41+2H20CaSiO3+6HF-→CaF2+SiF41+3H20用塑料、铅或石蜡瓶盛放，反应器皿、防护31
31 SiO2+4HF→SiF4↑+2H2O CaSiO3+6HF→CaF2+SiF4↑+3H2O ∴ 用塑料、铅或石蜡瓶盛放， 反应器皿、防护 问题2：用什么容器盛放HF（aq）？ 应注意什么？
X-as a ligandMS(s) dissolved owing to the coordination of X3HgS + 12HCI + 2HNO, (aqua regia,王水)= 3[HgCI] 2-+3S + 2NO + 4H,0+ 6H+HgS + 4 =HgI 2-+ H,S32
32 •X- as a ligand MS(s) dissolved owing to the coordination of X- 3HgS + 12HCl + 2HNO3 (aqua regia,王水) = 3[HgCl4 ] 2－+ 3S + 2NO + 4H2O + 6H+ HgS + 4I - = HgI4 2- + H2S
(2) Preparations of HX (aq)a.direct synthesisb.concentrated acid + metal halidec. hydrolysis of nonmetal halided.saturated hydrocarbon/芳烃+X,(l除外(by-product in production of pestcide)33
33 (2) Preparations of HX (aq) a. direct synthesis b. concentrated acid + metal halide c. hydrolysis of nonmetal halide d. saturated hydrocarbon/ 芳烃+ X2 (I2除外) （by-product in production of pestcide）
HF(aq)CaF,+H,SO4(conc.)=CaSO4+2HF用H,O吸收C,H +F2= C,H,F + HF② HCI (aq)In industry: H, + Cl, = 2HCI (combustion)In lab : NaCI + H,SO4= NaHSO + HCI加热—Na,SO4+HCIPCl,+H,O →H,PO,+HCI （剧烈厂C,H,+ Cl, (Br2) → C,H,CI +HCI (HBr)34
34 ① HF(aq) Ca F2 + H2 SO4 (conc.)= CaSO4 + 2HF 用H2O吸收 C6H 6+F2 = C6H5F + HF ② HCl (aq) In industry: H2+ Cl2 = 2HCl（combustion） In lab : NaCl + H2 SO4 = NaHSO4 + HCl 加热→Na2 SO4+ HCl PCl3+ H2O → H3PO3+ HCl（剧烈） C2H6 + Cl2 (Br2 ) → C2H5Cl + HCl（HBr）
HBr(aq)/HI(aq)3NaBr+H,PO4=Na,PO4+3HBrHBr + H,SO (conc.)→ Br, + SO, + H,OHI + H,SO4 (conc.)-→ I + H,S +H,O3Br2+2P+6H,O =2H,PO,+6HBr6H,O + 31 + 2P = 2H,PO, + 6HI35
35 ③ HBr(aq)/HI(aq) 3NaBr+H3PO4 = Na3PO4+ 3HBr HBr + H2SO4 (conc.)→ Br2 + SO2 + H2O HI + H2SO4 (conc.)→ I2 + H2S + H2O 3Br2 +2P + 6H2O = 2H3PO3 + 6HBr 6H2O + 3I2 + 2P = 2H3PO3 + 6HI