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化学 高校生

答えの2.3の反応がよく分かりません 教えて欲しいですm(*_ _)m

207. 〈医薬品の合成〉 局所麻酔薬としてもちいられるべンゾカインは, 分子式 CHNO2 で表されるペンゼ ンのp-二置換体であり,トルエンを出発原料にして, 1~4の4工程で合成される。 1.トルエンにア]とイ]の混合物を加えて加熱すると,化合物Xが得られる。こ の反応では複数の構造異性体が生じるが,かー置換体のみを分離して,2の反応にもち いる。 2.Xを中性条件で KMNO、 水溶液と反応させた後,沈殿をろ過して除き,ろ液を( () ) にすると,化合物Yが得られる。 3. Yを Sn の単体と過剰の塩酸をもちいて反応させた後,溶液を( ② )にする。生成 物をエーテルで抽出した後,抽出液からエーテルを除くと, 化合物Zが得られる。な お,この反応において, Sn の単体は4価まで酸化される。 4.Zをイ]とともにエタノールと反応させた後に水を加え,溶液を( (3) ) にすると, ベンゾカインが得られる。 (1) 文章中の口]に当てはまる物質を,化学式で記せ。 (2) 文章中の1)~(3)に当てはまる最も適切な溶液の液性を,次のあ)~(う)からそれぞれ→ つ選べ(同じ記号を複数回選んでよい)。 (あ)酸性 (3) X, Y, Z の中で最も融点が低いと予想される化合物を一つ選べ。 (4) ベンゾカインの構造式を記せ。 (い)中性 (う)塩基性 [20 広島大)

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英語 高校生

英文2段落目3文目のfor fairy talesのforは使ってという意味で使われているんでしょうか。、? また、第4段落5文目が上手く訳せません、、、 これは過去完了でしょうか??それとも、彼女は持っていた、1番初めのwrittenとdrawnをみたいにただの過去形で... 続きを読む

Your group is preparing a poster presentation entitled "The Woman Who 第5問(配点 15) c 15e uW y bos AS neighb A (20d dos Tot nongo in b s saoodt time a Wanti Created Peter Rabbit "using information from the magazine article below nob land her e Ved Pig ト popular character, Peter Rabbit. She brought her characters to life in b witty stories with finely detailed watercolors. a Br herit The daughter of wealthy parents, Helen Beatrix Potter was born on July 28, 1866 in South Kensington, London. She was educated at home and developed a love of literature and art. She used to practice her craft bv making illustrations for fairy tales like Cinderella and Sleeping Beauty. Also drawn to nature, she and her younger brother Walter kept many pets mice, rabbits, even bats and a hedgehog and she loved her family's long holidays in the Scottish countryside and the Lake District, a mountainous area in northwest England. in 19 The As a child and teenager, Potter made great sketches of her pets, as well as of trees and plants. She also kept a diary in which she recorded her Qpinions about cultural and political ideas and events. She wrote in a secret bs nsgst Peri 1866- Code that was not broken until fifteen years after her death. In the 1890s, Potter began selling her drawings.Potter's work was used for Christmas and New Year cards and an illustration of poetry. She was pleased by this success and decided to publish her own illustrated stories for children. In 1901, after the manuscript. was rejected by several publishers, she self-published her first book, The Tale of Peter Rabbit, She had first written and drawn a version of the story in a letter to the. sick child of her former private teacher.、The child was so delighted with it that Potter felt other children would be, too. She was right. The story of naughty Peter, who always gets into trouble because he does not follow his sisters' example and obey his mother's rules, was very popular. 、In 1902, the publisher Frederick Warne & Company printed a commercial edition, and it went on to become one of the most famous children's books of all time 1 Over the next twenty years, Potter wrote and illustrated twenty-two more books with that publisher, her early_observations of the animals and plants of her childhood often making their way into the stories. Potter's The Tale of Mrs. Tiggy-Winkle, published in 1905, for example, includes - 22 -

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