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化学 高校生

重要問題集132. ( B )の正解が(イ)なのですがなぜ還元剤が酸化防止剤として働けるか分かりません。 還元剤自信が酸化されて身代わりになってくれるという考えで合ってますか? また、還元剤はH得ると覚えていたので(ォ)にしてしまいました。この場合、脱水剤としては働けないの... 続きを読む

8.00. 過マンガン酸カリウム水溶液を加える反応において, 過酸化水素 より酸性にして濃度 がすべて消費されるために必要な過マンガン酸カリウム水溶液の体積 (mL) を有効数 Q.k, 字2桁で求めよ。 〇 (3) 硫酸酸性水溶液中における過酸化水素とヨウ化カリウムとの反応の化学反応式を示 せ。 [18 九州大〕 /132. 〈ビタミンCの定量〉 次の文中の (A) には語句, (B) には選択肢(ア)~(オ), (C) には有効数字2桁の数値を記せ。 ビタミンC(アスコルビン酸, C6HsOs) は次の化学反応式に示すようにヨウ素と反応 する。 ○失う ICsHsO6 +42 2I + 2H+ + CaHsO6 この反応は(A) 反応であり, この性質を利用してビタミンCは(B)に用いられてい る。この反応はビタミンCの定量に用いることができるが, 過マンガン酸カリウムを用 いてもビタミンCの定量はできる。 (C) mol/LのビタミンC水溶液10mL を硫酸で 酸性にした 0.010mol/Lの過マンガン酸カリウム水溶液で滴定したところ, 反応の終点 に達するまでに20mL要した。 (酸化剤として還元防止剤(イ) 還元剤として酸化防止剤(酸としてpH調整剤 (4) 塩基としてpH調整剤 (オ)脱水剤として乾燥剤 [15 早稲田大〕 ㊙ 133. 〈金属のイオン化傾向> 6種類の金属A~Fは, ナトリウム、銅、亜鉛, 銀, アルミニウム, 白金のいずれか である。これらの金属について,次のような実験結果 (ア)~ (カ)を得た。

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英語 高校生

英語長文ハイパートレーニング③に載っていた長文です。右ページ3行目の文の文構造がよく分からないので教えて頂きたいです。特にas was to beの意味が分からないです🙇🏻

UNIT 8 出題データ 10 ●ワード数: 422 words ■難易度 : 難 解答と解説:本冊 p. 112~127 次の英文を読み, 後の問いに答えなさい。 school. As was to be expected in a country far less calm than the world imagines, Zurich's proposal has produced an uproar. În educational circles/it is argued that French will lose its strong position in German- speaking Switzerland (eight years of school French before entering the university at 19), and that/ this could endanger the political unity of Switzerland. /French-Swiss politicians are furious. Protests about the possible damage to the teaching of German in French-speaking Switzerland are more puzzling, because the German taught there is High German, the dialect of South and Central Germany. But in daily life, (3) as distinct from formal writing, Swiss-Germans speak one or the other of their very different dialects. Hence the liking for English as a "national link language."ids Dual The 26 ministers have hurriedly set up a committee, (naturally headed by a professor of French) to (4) work out a policy by the middle world with a better command of English. 運用能力 of this year. (5) It may well come up with wise recommendations At the moment, English is officially taught for only one or two years before the school-leaving age of 16. Changing such practices is enabling every canton to choose its own solution.) The Swiss are not never easy in Switzerland. There is no national ministry of education. 40 easily *regimented, drilgne vous von *[注] canton (スイスの) 州, 県 ■設問■ 1. Which one of the following best describes the main point of this article? Indicate your choice on your mark sheet. 目標解答時間 : 25分) Switzerland has a language problem. The trouble is not a shortage of tongues, for the Swiss have four of their own. Some 65% speak one 30 variety or another of Swiss-German, /18% speak French/ 10% speak Italian and nearly 1% speak one of the four Romansh dialects (u used in 5 some of the valleys in the *canton of the Grisons. There are also the languages of the many immigrant workers. The problem is that many て 35 Swiss parents, (1) not to mention businessmen who want to talk to M colleagues abroad, would like more Swiss children to (2) go out into the 同僚 The 26 cantons are independent in cultural and educational affairs. So 26 education ministers have to 独立している meet (in order to decide on 15 recommendations which, to become law, then have to get through 26 parliaments. That is why it took Switzerland more than 20 years to introduce teaching in a second national language (German or French) at the age of 11 instead of 14. This time, however, one canton, deciding it had waited long enough) 20 has broken the deadlock./Zurich, the most populous of the cantons, and the heart of the Swiss banking world, plans to make English a required 行きづまり 銀行薬 UNIT 8 subject at an early age, /maybe even from the first year of primary 小学校 regiment 統制する English is important because it has become the international language. Language policy is a serious political issue in Switzerland. 3 Countries like Switzerland need to teach many foreign languages. It is impossible to deny the increasing significance of English. 5 Switzerland needs English to serve as a "national link language." 27

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