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

不含手性碳的分子一定不是手性分子A. 正确B. 错误

）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

( 0 . 5 分 ) 凡是能与空气中的氧或其他氧化剂起燃烧化学反应的物质称为（ ）。A. 助燃物B. 可燃物C. 燃烧产物D. 氧化物

能够鉴别醛糖和酮糖的是()。A. 托伦试剂B. 斐林试剂C. 班氏试剂D. 溴水

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

在氧化还原滴定中，如n1=n2=1，要是化学计量点时反应的完全程度达到99.9%，则两个电对的条件电势的最小差值为（）VA. 0.266B. 0.354C. 0.177D. 0.158

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

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 →□

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