年級

科目

問題的種類

化學 高中

想問第一題的E選項

氧化劑、 故為放 C 類止 (3) r: +F' Ja+b+c atc-b abtc 23.已知CH、H、及CH的莫耳燃燒熱分別為d、e及,又其正反應活化能為C,則其逆 (B) a+b-ca-b+c (D) b+c-a (E)c-b-a 歷屆試題 反應活化能為若干? (dre) --c-x (As+d-e+/(B)c-d-e+1(C) (D) cd-e-f (E) cd+e-fo x=c+f-d-e# d+e+f He (反應物生成熱總和)-(生成燃燒熱總和 二反應活化能一逆反應活化能 H₂Oz 「「大象牙膏」是一有趣的化學實驗:將濃度為30~35%的雙氧水與清潔劑混合,雙 氧水分解產生的氧氣被清潔劑水溶液包裹住產生氣泡,此泡沫狀物質會像噴泉一樣噴 湧而出。已知其化學反應式為: △H=-196 kJ/mol,活化能〒76kJ/mol。 3 #化能 CEN 158 76-196 196 範豪以下 让 =172272 並非 2H2Oz(1)→2H2O(l) + Oz(g) 若在此溶液中加入少量碘化鉀溶液,則泡沫噴湧的效果會更明顯。小安量測加入碘化 鉀溶液後的反應活化能E²=57kJ/mol與反應熱 AH2 =- QkJ/mol。此外,小安發現 加入碘化鉀溶液後,碘離子會參與反應,而且有甲、乙兩反應發生。 甲:HO(1)+I(aq) →Y(aq) + H2O(l) ↓57 WQH=-196KJ 乙: HOz(1) + Y(aq) → Z(aq) + H2O() + Oz(g) 160 61 A H 張限 已知甲、乙兩個反應的反應係數皆已平衡,且甲反應的反應速率小於乙反應的反應速 率,小安分析反應後碘離子的量沒有減少。根據以上實驗觀察及結論,下列敘述哪些 正確? 10 (aq) (A)196 (B)Y是OCZ (1) 甲反應活化能((於之反應活化能 (E) 雙氧水在此實驗中既是氧化劑,也是還原劑。 2H2D2(1)→2H2D(1)+02(9) 12. 右圖為某反應的反應過程與能量變化的關係。根據右圖, 試問下列敘述,何者正確? (电)此反應為放熱反應 (乙)此反應的能量變化AE=a-d (西) 正反應的活化能=F 能量 a di 反應過程

已解決 回答數: 1
PromotionBanner
英文 高中

請問第七題怎麼解

WISDOM ENGLISH broader of the D Talk their iver als. out of d Unit 8 Ban-Doh: The Most Authentic Taiwanese Eating Experience a student exchange program has really opened my eyes 2 the cultural differences between my country and Taiwan. One of the most memorable parts of my trip was when host family invited me to a wedding banquet in Kaohsiung. my 3 arriving at the banquet, I soon realized that it was totally different from what I'd expected. Back in the US, banquets are usually held in large dining halls. This one, taking place right out on the street! 4 was tent occupied nearly half the street. However, none of the pedestrians or the people in passing vehicles looked like they cared. Under the tent, guests sat at large round tables, chatting cheerfully. At one end of this temporary tent, there were cooks and assistants up shelter all the guests from the fierce sun, a huge delicious-looking food. 7 6 energetically to prepare platters of quite curious about how this fascinating custom of "open-air" banquets had first come about, I asked my host parents. The host father explained that this kind of banquet, known as a "ban- doh" in Taiwanese, 8 in the countryside. In the old days, when people gathered for a special event such as a wedding or an elder's birthday, everyone in the neighborhood would 10 9 to a ban-doh. The host would prepare all ingredients for the meal, and the neighbors would help out. Some would do the cooking, while others might provide tables, chairs, and eating utensils or assist in other ways. They would then all relax and enjoy the banquet together. The ban-doh back then was all about enjoying a sense of community and togetherness. Having the chance to experience this fascinating event, I feel truly lucky. It is the first story that I will share with my friends and family when they ask me about my student exchange experience in Taiwan. (A)1. (A)Taking part in 0809 (A) backward 4 (0) 3. (A) Upon B)4. B) 5. (A) Putting (A) In other words (D) in front of Until (D) In particular (B) Took part in (B) toward (C) Takes part in (C) regarding (D)Taken part in (B) as soon as (B) on the other hand (B) Put the moment (C) additionally (C)To put (D) Have put B) 6. (A) work (B) working 7. (A) Were (B) Feel XC) t (C) Being to work (D) worked 8. (A) originate (B) originating (C) to originate (D) Felt (D) originated (9. (A)cooperate (B) introduce (C) initiate (D) correspond ) 10. (A) revenge (B) arrange (C) arrest (D) commit

已解決 回答數: 1