問題詳情
49. 室溫時，下列那一種離子會與 Ca 2+ 離子在水中生成沉澱 ( 意即在水中的溶解度小於 0.1 M )？
(A) NO3 −
(B) C2O4 2−
(C) C l −
(D) ClO4-
(A) NO3 −
(B) C2O4 2−
(C) C l −
(D) ClO4-
參考答案
答案：B
難度：非常困難0
統計：A(0),B(0),C(1),D(0),E(0)
內容推薦
- 2 I would be most obliged if you ........(A) let me to pay later(B) allow me to pay later(C) permit
- 3 To spread the cost of spending on articles you buy many big departments let you open a ........(A)
- 下列何種化合物是工業上由異丙苯製造酚的另一重要產物？(A) 丙酮 (B) 丙烯 (C) 丙炔 (D) 1－丙醇
- 2 All the representatives are allowed to spend money for entertaining with their ....... account.(A)
- 欲分離AgCl 與Hg2Cl2 的固態混合物，可加入下列何種化合物的水溶液？(A) 硫酸 (B) 氨 (C) 氫氧化鈉 (D) 鹽酸
- 下列何者電量最大？(A) 02×1023個電子 (B) 48250 庫侖 (C) 2 法拉第 (D) 5 莫耳電子
- 養魚的水族箱中，常常加入海波，它是下列何種化合物？(A) NaHCO3(B) Na2CO3(C) Na2S2O3(D) Na 2SO4
- 下列那一個化合物中金屬的氧化數最大？(A) HMnO4 (B) H2Cr2O7(C) PbO2 (D) Fe 2O3
- 8 That policeman is getting out his ....... and walking near the statue I'm sitting on.(A) note
- 下列何種鹵素可以用來做為分離鈾同位素的原料？(A) 碘 (B) 溴 (C) 氯 (D) 氟
內容推薦
- 4 Once you are earning money and you want to keep it safe, you can always ....... an account with a
- 含 MgCl2的不純樣品 190 公克，經溶解後，與過量沈澱劑 ( NH4)2HPO4反應，使完全生成 NH4MgPO4沉澱，將此沉澱物灼熱得 113 公克的Mg2P2O7。請問上述
- 有關臭氧的敘述，下列何者正確？(A) 植物吸收二氧化碳進行光合作用產生臭氧(B) 大氣層中的中氣層為臭氧含量最高的區域(C) 大氣層中的臭氧可以吸收太陽光的紫外線(D) 臭氧可使碘化鉀的澱粉試
- 4 The ....... trend in children's desire to wear designer label clothes should be exploited.(A)
- 以 8 安培的電流電解融熔的 MgCl2，歷時為 5 小時，則理論上可製得鎂多少公克？( 原子量：Mg = 3 )(A) 4 (B) 2 (C) 2 (D) 49
- 8 Before they got married, they decided to open a ....... account.(A) united (B) joint (C) unified (
- 5 I could phone someone to ........(A) take me the money(B) carry me the money(C) bring me the money
- 1 v. to raise an opinion; to adjust the tone of(A) comprehend (B) vacation (C) voice (D) remove
- 5 You have to ....... the public that it is in their own interest to read the instructions on all ou
- NH4CNO → CO ( NH2)2是屬於下列何種基本的化學反應？(A) 重組 (B) 複分解 (C) 化合 (D) 取代
- 9 If you have saved some money, it is a good idea to put the money into a ....... account.(A) heap (
- 有關空氣污染的敘述，下列何者正確？(A) 二氧化碳容易與血紅素結合，造成缺氧性中毒死亡(B) 一氧化碳含量太多，容易造成地球的溫室效應(C) 二氧化氮含量太多，容易造成光化學煙霧(D) 硫的氧
- 圖(二)所示的電路，運算放大器的飽和電壓為 ，則Vo為多少？ (A)－9V (B)－6V (C)＋6V (D)＋12V。
- 6 In order to survive in this business you must adopt a ....... stance.(A) competition (B) competing
- 5 At the end of thirty days the company will ask you to ....... the account.(A) arrange (B) finish (
- 在 STP 條件下，50 公克的CaCO3(S) 與足量的鹽酸完全反應後，則下列敘述何者正確？( 原子量 Ca = 40，Cl = 5 )(A) 可生成 1 莫耳的H2O (B) 可生成
- 2 The local department store has to make a sustained effort at this time of the year to ....... cust
- 2 There was nothing in the contract that ....... who would be responsible in the event that one of t
- 9 That sounds a good idea. I'm sure he'll ........(A) symbolise (C) energise (B) sympathis
- 某化合物由碳、氫、氧三元素組成，取 60 公克該化合物進行分析，確定含有碳 24 公克，氫 4 公克，其餘為氧，則該化合物的實驗式為下列何者？（原子量 C = 12，H = 1，O = 16）
- 10 However hard I try, I find it impossible to account ....... this missing sum of money.(A) with (B
- 3 A good team leader must be able to ....... his colleagues to face the challenge of a downturn in b
- 3 An independent adviser was called in after the collapse of the company to ....... some of the issu
- 10 All right, all right Mr manager. Just as you say, ........(A) of course I'll wash the dishes
- 6 The finance director is responsible for ....... the accounts for the business.(A) holding (B) keep