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6.完成下列反应式(对于有两种产物的请标明主、次产物)-|||-(1) lt -CHO+N(H)_(2)- √-|||-(2) equiv CH+2C(H)_(2)O →-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(3) bigcirc + 对甲基苯磺酸-|||-苯,加热-|||-H-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(4) +N(H)_(2)OHarrow -|||-(5) =0 ./(HO)^- ._(2)O/(H)^+-|||-? ?-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-((C{H)_(3))}_(2)Cu(L)_(1) _(2)O-|||-(6)-|||-PhLi _(2)O-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C} bigcirc (1)PhMgBr-|||-bigcirc (2)(H)_(2)O-|||-(7)(Ph)^--|||-bigcirc (1)(C)_(2)(H)_(5)MgBr-|||-② _(2)O-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(H)_(3)-|||-(8) +-|||-_(10)-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C} 0-|||-+-|||-(9) CHO _(10)-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(10)C(H)_(3)CC(H)_(2)Br HOCH2CH2OH-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(11) +(H)_(2) ykparallel c-|||-(H)_(3)-|||-(H)_(3)-|||-=0 (H)_(4)-|||-(12)H3C (CH3)2CHOH-|||-_(3)C-|||-(13) /-|||-LiBH(sec-Bu)36.完成下列反应式(对于有两种产物的请标明主、次产物)-|||-(1) lt -CHO+N(H)_(2)- √-|||-(2) equiv CH+2C(H)_(2)O →-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(3) bigcirc + 对甲基苯磺酸-|||-苯,加热-|||-H-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(4) +N(H)_(2)OHarrow -|||-(5) =0 ./(HO)^- ._(2)O/(H)^+-|||-? ?-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-((C{H)_(3))}_(2)Cu(L)_(1) _(2)O-|||-(6)-|||-PhLi _(2)O-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C} bigcirc (1)PhMgBr-|||-bigcirc (2)(H)_(2)O-|||-(7)(Ph)^--|||-bigcirc (1)(C)_(2)(H)_(5)MgBr-|||-② _(2)O-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(H)_(3)-|||-(8) +-|||-_(10)-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C} 0-|||-+-|||-(9) CHO _(10)-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(10)C(H)_(3)CC(H)_(2)Br HOCH2CH2OH-|||-O-|||-(14)Ph Mg _({H)_(3)O}^+-|||-苯-|||-0-|||-(15) _+(Br)_(2)xrightarrow [加热]({H)_(2)O,HOAC}-|||-O-|||-(16)Ph-|||- Ph+(H)_(2)overline (C)-overline (P)(H)_(3)arrow -|||-(17) +HCHOxrightarrow ({HO)^-}-|||-(18) bigcirc (1)=0+C(H)_(3)C(O)_(3)Hdfrac (C{H)_(3)COOE}({40)^circ C}-|||-(11) +(H)_(2) ykparallel c-|||-(H)_(3)-|||-(H)_(3)-|||-=0 (H)_(4)-|||-(12)H3C (CH3)2CHOH-|||-_(3)C-|||-(13) /-|||-LiBH(sec-Bu)3

【单选题】配制KMnO4标准溶液的正确方法是A. 采用直接配制法B. 采用标定法C. 是溶液呈碱性D. 配制后立即标定

)指()A. 物质的浓度为1mg/100ml,液层厚度为1cm时,在一定条件下的吸收度B. 物质的浓度为1mg/1000ml,液层厚度为1mm时,在一定条件下的吸收度C. 物质的浓度为1g/1000ml,液层厚度为1cm时,在一定条件下的吸收度D. 物质的浓度为1g/100ml,液层厚度为1cm时,在一定条件下的吸收度E. 物质的浓度为1mg/100ml,液层厚度为1mm时,在一定条件下的吸收度

下列各组物质,能用班氏试剂鉴别的是( )A. 乳糖和葡萄糖B. 乳糖和麦芽糖C. 葡萄糖和果糖D. 麦芽糖和蔗糖

下列化合物碱性最强的是BCNHD

完成下列反应式,可直接写出产物或者条件。-|||-完成下列反应:-|||-CH3-|||-a. +HBrarrow -|||-b. 1 +Cl2- 高温-|||-CCl4-|||-c. □+ Cl2-|||-d. CH2CH3 +Br2 FeBr3-|||-CH(CH3)2-|||-e. +Cl2- 高温-|||-f. CH3 ①O3-|||-②Zn粉,H2O-|||-CH3-|||-①H2SO4-|||-g. ②H2O,△-|||-h. boxed (uparrow )boxed (uparrow )+C(H)_(2)(Cl)_(2)xrightarrow (Al{Cl)_(3)}-|||-CH3-|||-i. boxed (uparrow downarrow )+HN(O)_(3)arrow -|||-j bigcirc (arrow )xrightarrow (Delta )+kMn(O)_(4)xrightarrow [Delta ]({H)^+}-|||-=!=!= C(H)_(2)-|||-k. +(Cl)_(2)arrow

羧基中存在的电子效应是A. p-π共轭B. π-π共轭C. p-p共轭D. σ-π共轭

入射光波长选择的原则是( )A. 吸收最大B. 干扰最小C. 吸收最大干扰最小D. 吸光系数最大

分子中含有碳碳双键的是()A. 丙炔B. 溴化氢C. 丁烷D. 丙烯

8.5 完成下列转化:-|||-OH 0-|||-a. square b. (H)_(3)C(H)_(2)C(H)_(2)OHarrow C(H)_(3)Cequiv CH-|||-c. (H)_(3)C(H)_(2)C(H)_(2)OHarrow C(H)_(3)C(H)_(2)C(H)_(2) OCH(CH3)2-|||-d. (H)_(3)C(H)_(2)C(H)_(2)C(H)_(2)OHarrow C(H)_(3)C(H)_(2)CHC(H)_(3)-|||-OH-|||-OH OH-|||-e.-|||-SO3H-|||-f. (H)_(2)=C(H)_(2)arrow HOC(H)_(2)C(H)_(2)OC(H)_(2)C(H)_(2)OCH 2CH2 OH-|||-g. (H)_(3)C(H)_(2)CH=C(H)_(2)arrow C(H)_(3)C(H)_(2)C(H)_(2)C(H)_(2)OH-|||-h.ClCH2 CH2CH 2CH2 OH →□

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  • 16.火灾燃烧的三要素有可燃物、助燃物和()。(单选题5.0分)A. 着火源B. 氧气C. 氯气D. 可燃气

  • 土壤两份分别加入等量的mathrm(NaCl)和(mathrm{FeCl)}_(3)溶液,相同条件下振荡过滤,滤液中等量的((mathrm{NH)}_(4)())_(2)(mathrm{C)}_(2)(mathrm{O)}_(4)溶液,产生的现象是A. 都不产生沉淀B. mathrm(NaCl)的白色沉淀多于(mathrm{FeCl)}_(3)C. (mathrm{FeCl)}_(3)的白色沉淀多于mathrm(NaCl)D. 两者沉淀一样多

  • 分光光度计由光源、单色器、吸收池、检测器和显示系统组成。

  • 5.金属镁与硫酸反应来测定摩尔气体常数R的实验-|||-中,量气管中水的初始刻度应是() ()-|||-A .00sim 10.00mL 之间-|||-B .00sim 20.00mL 之间-|||-C .00sim 15.00mL 之间-|||-D .00sim 5.00mL 之间

  • 测定自来水中钙离子终点颜色是下列哪个物质的颜色?A. 钙指示剂和钙离子的配合物的颜色B. 游离钙指示剂的颜色C. EDTA和钙离子的配合物的颜色D. EDTA的颜色

  • 10下列关于相对校正说法错误的是()(2.5分) ()-|||-A、 是一种常用的玻璃量器的校正方法-|||-B、要求校正的两种容器之间的容量有一定比例关系-|||-C.校正的两种仪器配套使用才有意义-|||-D. 测定容量器皿的实际容积

  • 标定EDTA实验中,可在台秤上称取基准物质CaCO3的质量。A. 正确B. 错误

  • 当皮肤接触到腐蚀性试剂时,应立即采取的措施是?()A. 用干布擦拭B. 用大量清水冲洗15分钟以上C. 涂抹药膏D. 前往医院就医

  • 等渗电解质溶液是用于补充水分和电解质,维持体液和渗透压平衡。A. 正确B. 错误

  • 22.由于温度的变化及试剂的侵蚀等原因,会引起-|||-容量器皿的实际容积与它所标示的容积之间有较-|||-大的误差,但不会超过分析所允许的误差范围。-|||-A 对-|||-B错

  • 24.镁条与硫酸反应使得量气管压力增大,漏斗里-|||-面的水溢出来会使测定摩尔气体常数R结果偏-|||-高。() ()-|||-A 对-|||-B 错

  • 混合碱的测定实验中,滴定管中HCl的初始刻度在1.00~10.00 mL之间均可A. 正确B. 错误

  • 稀释浓硫酸时,正确的操作是?()A. 将水倒入浓硫酸中B. 将浓硫酸缓慢倒入水中,并不断搅拌C. 同时将水和浓硫酸倒入容器中D. 无所谓顺序

  • 滴定管读数时应该()A. 放在铁架台上,眼睛平视溶液的凹液面B. 一只手握住,两一只手扶住,眼睛平视溶液的凹液面C. 一只手全部握住,眼睛平视溶液的凹液面D. 一只手的大拇指和食指拿住,眼睛平视溶液的凹液面

  • 下列属于危险化学品的是A. 易燃液体B. 氧化剂和有机过氧化物C. 汽油D. 放射性物品E. 剧毒药品和感染性物品

  • 4、下列可燃物中,属于难燃可燃物的是( )A. 地表干枯杂草B. 枯立木C. 生长季节的绿色植物D. 较干燥的腐殖质层

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  • 吗啡是鸦片中最主要的生物碱,从鸦片提取而成。纯净的吗啡为()或白色的粉末或结晶。A. 无色B. 浅黄色C. 浅绿色D. 浅褐色

  • Fe²⁺离子中3s,3p,3d,4s轨道能量关系为()A. E_3s B. E_3s C. E_3s = E_3p = E_3d = E_4sD. E_3s = E_3p = E_3d

  • 5.在试管中加入2 mL蒸馏水,然后加入1滴-|||-cdot (L)^-1BiCl3 溶液,观察到现象是() ()-|||-A 白色沉淀生成-|||-B 黑色沉淀生成后又消失-|||-C 黑色沉淀生成-|||-D 白色沉淀生成后又消失

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