問題詳情
11. The pH of a 0.05 M solution of trichloroacetic acid (CCl3CO2H), a corrosive acid used to precipitate proteins, has the samepH as a 0.04 M HClO4 solution. The Ka for trichloroacetic acid is thus .
(A)4.0 × 10-8
(B)1.6 × 10-5
(C)0.16
(D) 1.4 × 10-14
(E)0.001
(A)4.0 × 10-8
(B)1.6 × 10-5
(C)0.16
(D) 1.4 × 10-14
(E)0.001
參考答案
答案：C
難度：適中0.4375
統計：A(0),B(4),C(7),D(1),E(1)
內容推薦
- Which of the following 0.10 M solutions are correctly arranged in order of the strongest acidic
- Kf for the complex ion Ag(NH3)2+ is 7 × 10Ksp for AgCl is 6 × 10-Calculate the molar
- 下列何種情況會造成貨幣供給增加？(A)降低存款準備率(B)提高重點現率 (C)中央銀行標售國庫券(D)出口減少
- 為了使投資組合之風險不要太高，選股時應(A)集中某類股投資(C)選擇高成長之股票(B)選擇低成長之股票(D)選擇性質不同之股票投資
- For the reaction PCl5(g) PCl3(g) + Cl2(g) at 327℃, the equilibrium constant, Kp, is Suppose
- You have 0 mL of 0.10 M HA. After adding 0 mL of 0.10 M NaOH, the pH of the HA-NaOH soluti
- 何者屬於時間的技術指標？(A)股市周期循環(B)趨向指標DMI (C)平均成交量(D)超買超賣指標OBOS
- 投資者若欲提高期望報酬率，應購買：(A)債券型基金(B)指標型基金(C)貝它係數高的股票(D)波動率低的股票
- The decomposition of ethanol (C2H5OH) on an alumina (Al2O3) surface, C2H5OH(g) → C2H4(g) + H2O(g)
- What is the osmotic pressure of an aqueous solution containing 0 g/L of a protein (molar mass
內容推薦
- 五、某直接作動式蒸汽幫浦（Direct-acting steam pump）的蒸汽側與液體側之活塞直徑分別為 150 mm 與 60 mm，其機械效率為 65%。若此時蒸汽側之淨壓力為 150 kPa
- 六、請寫出柏努利方程式（Bernoulli equation），並說明此方程式成立的基本假設。（10 分）
- The “Unsinkable Titanic” sank on its first voyage after striking an iceberg. It was one of the gr
- When the world economy continued to grow rapidly, some economists cautioned political leaders ag
- Olga turned down the volume on the CD player. Otherwise, the neighbors probably _____ to complai
- Head delegations from the countries are now at the negotiation tables in the first round of _____
- What is the for H2O(g) + (1/2)O2(g) ←→ H2O2(g) at 600. K using the following data:H2(g) + O2(g)
- Birds are often thought of as flying reptiles _____ a lot of features in common.(A) in that they
- _____, she would have caught the train.(A) Had she hurried (B) If she has hurried (C) If she hur
- She always had to _____ to her father’s wishes, whether or not she agreed with him. He wishes tha
- Unfortunately there are some _____ between urban and rural educational systems. It is true that
- _____ that the world’s population will reach ten billion by the year 20(A) Its estimation (B)
- According to the article, people who speak English as their native language might understand
- James Brooks is considered by many around him to be a(n) _____. They don’t expect him to help oth
- If a person continues to drink and drive, then the police should immediately _____ his driver’s
- _____ brings about harm or inconvenience to public life is referred to as public nuisance.(A) Th
- Part III. Reading Comprehension: Choose the best answer based on the passages. 30%Passage 1The "
- How many language families are mentioned in this article?(A) Three (B) Six (C) Eight (D) Ten
- Some drugs are known to create an _____ bodily condition for those who use them.(A) indulgent (B)
- Poor health has _____ Jim to resign from his job. Recently he has been in a worse condition and
- _____ introduction of sophisticated medical technology, micro-surgery has become an important me
- In the second paragraph, the word “accumulate” can be replaced by the word, _____.(A) amass
- Which of the following languages is not the official language of the United Nations?(A) Fren
- The _____ of the earliest vaccine against hepatitis B has been called into question.(A) democracy
- In the 14th century, there was severe _____, which is known as the Black Death, in Europe.(A) pr