問題詳情
30. For the following reaction
PCl5 (g) 
PCl3 (g) + Cl2 (g) △H = -89 KJ
How can the equilibrium be shifted to the right?
(A) add more PCl5
(B) decrease the pressure by changing the volume
(C) remove Cl2
(D) remove PCl3
(E) all of the above are correct
參考答案
無參考答案
內容推薦
- 層流的管流壓損公式 。若是層流流況，f 可簡化成（Re 是雷諾數）：(A) 8/Re (B) 16/Re (C) 32/Re (D) 64/Re
- 一水管直徑是 D，請問其水力直徑是多少？(A) D/2 (B) D/4 (C) D (D) 2D
- How many hydrogen atoms are present in each molecule of 1,3-dimethylbicyclo[0]butane?(A) 10
- 中國人口分布不均，人口多集中在中國東半部。以人口分布情況劃分東、西半部，是以圖一中哪條線為分界？ (A)甲 (B)乙 (C)丙 (D)丁
- 軸與齒輪以平鍵緊固結合在一起，以傳達動力，則有關此平鍵上之壓應力與剪應力的敘述，下列何者正確？(A)平鍵上的壓應力大於剪應力 (B)平鍵上的壓應力等於剪應力 (C)平鍵上的壓應力小於剪應力 (D
- 有一平鍵，其規格之標註為12 × 8 × 50雙圓端，表示(A)鍵寬8mm (B)鍵寬12mm (C)鍵高50mm (D)鍵長96mm。
- 公制斜銷之公稱直徑是指(A)大端減小端直徑 (B)小端直徑 (C)大端直徑 (D)大小端平均直徑。
- 圓形鍵之缺點為(A)鍵槽製造困難 (B)必須先做好鍵槽再裝配機件 (C)鍵槽較深，軸強度較弱 (D)所受之力有壓力與剪力。
- 柏努利方程式 。請問各項的因次(dimension)為何？(A) M/LT2 (B) M/LT (C) M/ √LT (D) M/T.
- How many grams of Ca(NO3)2 can be produced by reacting excess HNO3 with 40 g of Ca(OH)2? [Ca =
內容推薦
- (B)閱讀短文，回答 3-5 題Dear Lucy,I am sorry to tell you that I lost the book you lent to me lastweek.3:00 t
- 【題組】Where might(可能) Lina lose the book?(A) At home. (B) In the bathroom.(C) On the bus. (D) In th
- 【題組】(A) did (B) am (C) do (D) was
- 【題組】(A) Who (B) When (C) How (D) Why
- 【題組】(A) give; X (B) give; to (C) give; for (D) gave; to
- Given the following data (A) 18 J / K mole (B) 8 J / K mole (C) 118 J / K mole (D) 1180 J /
- 【題組】(A) mine (B) my (C) me (D) yours
- 【題組】Which is NOT true?(A) Betty gave Lucy the book.(B) Lucy likes the book a lot.(C) Lina didn’t g
- 右圖中的矩形截面受到 40N-m 的力矩，請問抵抗此一力矩而且與變形有關的截面慣性矩(area momentof inertia)的值為何？(A)0.2025 (10 -6 )m4(B) 0.
- 斜銷或稱錐形銷(taper pin)，其錐度公制為(A)1：(B)1：(C)1：(D)1：96。
- 【題組】Tina, the little sister, wrote down what happened in her diary:Which activity/activities was
- 如圖所示之輪系，若A軸逆時針120rpm，則C軸轉速與轉向為 (A)40rpm，順時針 (B)360rpm，逆時針 (C)240rpm，順時針 (D)240rpm，逆時針。
- 三重滑車之輪系為(A)普通輪系 (B)周轉輪系 (C)單式輪系 (D)複式輪系。
- 阿旺為了準備考試，整理以下表格，但有地方寫錯了，請幫忙指出哪一欄寫錯了？(A)(B)(C)(D)
- Calculate the work for the expansion of CO2 from 0 to 5 liters against a pressure of 0 atm
- Green light has a wavelength of 50 x 102nm. The energy of a photon of green light is:(A) 64
- According to the Bohr model for the atom:(A) electrons are located in similar orbitals (B) elect
- A polar covalent bond results from two atoms:(A) unequally sharing a pair of electrons (B) equal
- Calculate the pH of 0.10 M NH4CN. (Kb for NH3 = 8 x 10-5; Ka for HCN = 2 x 10-10)(A) 23 (B
- The entropy of the universe is always increasing. This is a statement of .(A) 1st law of thermod
- For a reaction to be spontaneous, which of the following must be TRUE?(A) delta H must be negati
- Which of the following is NOT a property of alcohols compared to alkenes?(A) exhibit hydrogen bo
- An atom becomes an ion by:(A) gaining or losing protons (B) gaining or losing electrons(C) gaini
- Which bond is the least polar? (Electronegativities: H = 2; N = 0; O = 5; P = 1; S =
- In order for the electron to return to the ground state, what must happen?(A) energy is absorbed