問題詳情
4.在Sn2+(aq) + Fe3+(aq) → Sn4+(aq) + Fe2+(aq)（未平衡）中，
（1）何者為氧化劑？____________
（1）何者為氧化劑？____________
參考答案
答案：B
難度：簡單0.759868
統計：A(6),B(231),C(12),D(27),E(0)
內容推薦
- 【題組】( ) (A) Thus (B) Fortunately (C) Apparently (D) Though
- f(x) g( x),分別為 6, 4 次多項式， f(x )除以g( x )得商式Q (x )，餘式 R(x ) ， 有 Q (x ) (x −2 ) 的因式，則下列選項何者正確？(A
- 【題組】將各金屬浸於下列各組溶液中：（甲）鎂＋硝酸鎳、（乙）鋅＋硝酸銅、（丙）鎳＋硝酸銅、（丁）鋅＋硝酸鎳、（戊）鎂＋硝酸鋅，均可發生取代反應，則各金屬活性比較，何者正確？ (A)Ni＞Mg (
- 【題組】 （4）H2O
- 1932 年，查兌克用α粒子轟擊 時，得到 ，並同時產生另一種粒子。下列關於這粒子之敘述，何者錯誤？(A)它來自於原子核 (B)它是一種頻率很高的光子(C)它在磁場中不發生受到磁力偏轉(D)
- 【題組】( ) (A) take (B) cost (C) need (D) spend
- 【題組】只因為他的雙親貧窮，那並不表示他不會有光明的未來。__________ __________ his parents are poor doesn't mean he wil
- 【題組】下列有關電解質導電的敘述哪些是正確的？ (A)Na2O、NH4Cl為離子化合物，其水溶液皆能導電，皆屬電解質 (B)KNOHg在液態下都能導電，皆屬電解質 (C)電解質導電時溶液必維持
- 【題組】 (3)BF3
- 下列各組，何者爲週期表之過渡元素？(A)Li，Na ’ K (B) N ’ P，As (C) Cxi ’ Ag，Au (D)O ’ Se ’ Te。
內容推薦
- 【題組】( ) (A) to (B) with (C) of (D) under
- 【題組】拉塞福「原子行星模型」的主張，遭遇到質疑的地方有哪些？ (A)原子核的靜電力會將電子吸住 (B)電子繞原子核作圓周運動時，會釋放電磁波而墜毀 (C)原子核的體積很小 (D)原子大部分的
- 【題組】（2）何者為還原劑？_____________
- 【題組】(２) ℃ 時，某水溶液的 pOH＝4，則溶液中之 [H＋] =___________
- 【題組】( ) (A) waited (B) and waiting (C) waiting (D) to wait
- 一. 單選題(每題 4 分，共 12 分，答錯不倒扣) 科學家們利用芮氏規模來度量地震的強度，設 I 為地震時所釋放的相對能量強度，芮氏規模 r 之定義為 r＝log I，1999年台灣發生兩次大
- 【題組】( ) (A) be taken care (B) take care (C) take care of (D) be taken care of
- 【題組】( ) (A) stranded (B) to be stranded (C) strand (D) stranding
- 【題組】( ) (A) had died…could have survived (B) had died…could survive(C) died…could have survived
- Although many people nowadays enjoy the convenience brought by cell phones, it’s noexaggeration to s
- 【題組】( ) (A) In fact (B) That is (C) In contrast (D) Without doubt
- 【題組】( ) (A) to bring (B) bring (C) to have brought(D) having brought
- 【題組】( )James was so worried ________ his grandmother that he couldn’t eat.(A)from(B)at(C)for(D)abo
- 【題組】( ) (A) alone (B) themselves (C) at all (D) though
- 【題組】( ) The movie star tried to _______ the paparazzi but in vain.(A) get rid of (B) get up (C) ge
- 【題組】( ) (A) checked (B) checking (C) to check (D) was to check
- 【題組】( )Choose the correct answer. (選正確的答案)(A) Whenever you need me, you can give me a ring.(B) I
- 【題組】( )The weather report says ________ it will rain tomorrow and ________ it will be much colder
- 【題組】( ) (A) left (B) were left (C) were leaving (D) to be left
- 【題組】( ) You can’t handle this situation _______. You should find help.(A) by degrees (B) by yourse
- 【題組】( ) (A) had been (B) should have been (C) can be (D) were
- 四、綜合測驗(克漏字) (每題 2 分,共 20 分)[1]I didn't know which of us had the idea of throwing rocks onto the
- 【題組】( )When Stephanie went to France, she visited a city ________ Paris.(A)called(B)which called(C
- Psychologists have observed that people usually focus on tasks that aren’t finished. This___35___ ma
- 【題組】( ) Mary caught a bad cold and could not ______ the baseball game.(A) talk a walk (B) take aft