想問這題如何平衡～謝謝

高二化學小考 1. Cu2S(s)+H*(aq)+NO3 (aq) → Cu²*(aq)+NO(g)+S(s)+H2O(1)

🆘🆘答案and

V 44 吃 範例 2 QAPR 21 PSEC. LX0000/ST=TRO“ A 某元素 X 所形成的五種氣體化合物,在常溫常壓時,每 24.5 升的重量及其中所含 X 的重量百分 比,如下: 88 352 36.08 (應選 例 MO, 中,分子量 96,M 的含量百分率為50% 96×0.5=48=24×2,M 的原子量為 24 二 (A) 3 (B) 6 化合物 重量(克) 60 eseA 28 Z 乙丙丁戊 (C) 8 丙寬 44 買: 44 J ezde 44 UITS PACO 016 0 J 基於原子學說的模型及本實驗的結果,X 的原子量有多種可能,試問 X 的原子量可能為何? 仁路二段 UMB PAPR.21 30日 D) 12 含X 的重量百分比(%) 量合80 48 DOAE 182 36.08 示:27:量:88 17 示號: 80 示案 (E) 16 - 莫示表 75 Tom form EUR 15,4((S) 24 RACQ.21 1 ROY

請問第16題的C，飽和溶液底部無沉澱加水的話不就會稀釋，為什麼平衡會移動，再度達平衡時離子濃度和原來相同

[CO] = 0.1 M (E) [HCO3 ] = 0.1 M。 16. 分別取下表中各個澄清透明的溶液(原溶液底部皆無沉澱),進行如表中的各項操作,所得 的相關圖形何者正確? 選項 原溶液 加入溶液 ANDERE 變化圖 選項 原溶液 加入溶液 變化圖 飽和 BaSO4(aq) Ba(NO3)2(s) 濃度 飽和PbCl(aq) 等體積蒸餾水 2+ [Pb²+] 2+. [Ba²+] [SO] 時間 時間 pbula apb²+ zup L(D) 0.1 M CH,COOH(aq) |蒸餾水 解離度 0.1 M HCl(aq) 等體積 1.0 M NaCl(aq) (B) 水溶液體積 飽和 Mg(OH)2(aq) 數滴鹽酸 2+ 時間 [Mg 時間 Mavolley Mast + oH MP

11.救一下感恩

(A) [OH]> [H] (B) [H] > [OH ] (C) the water is no longer neutral (D) none of these is correct. 11. A 100.0-mL sample of 0.2 M (CH3)3N (Kb = 5.3 x 105) is titrated with 0.2 M HCI. What is the pH at the equivalence point? (A) 5.4 (B)7.0 (C) 10.3 (D) 3.1 (E) 9.9 17 You have a solution of 0 10 MC5 and 0.10 M Cr0.² You add 0 10 M silver nitrate dropwise into

請問第9題濃度換算⋯不懂為何答案差這麼多

the molality? (A) 0.1775m H₂SO 7.75 198⁰ mol (D)1.940m H₂SO4⋅ CM = =1.9435m (100x1.1094-1775) X103³kg 9. A typical commercial-grade acetic acid is 36% CH3COOH by mass and density (A 1.05g/mL. Calculate the molarity (mol/L) of the CH3COOH. (A)6.3M (B)12M (C)17M (D) 18M. 36/60 c.nl M (103台大C) 100X105X10-3 cha y 201 iter (C)mole fraction (D) (E

請問第50題AC選項的意思～？🙏

700 0.00142 1.30 0.26 ~ Ea = 40.00011 *8. 133.7kJ/mole backward B 50. For a reaction for which the activation energies of the forward and reverse directions are equal in value. (A)The stoichiometry is the mechanism (B) (C) AS = 0 (D)the order is zero. Dan-0 (台大甲)

第二張是解答，問最後一個步驟，怎麼看？

7-72 Reaction of 2,3-dimethyl-1-butene with HBr leads to an alkyl bromide, addin C6H13Br. On treatment of this alkyl bromide with KOH in methanol, form a elimination of HBr occurs and a hydrocarbon that is isomeric with the ber starting alkene is formed. What is the structure of this hydrocarbon, -mote and how do you think it is formed from the alkyl bromide? qedo eidt al .equory Janoitonut Tojem ent to noitqirozeb aus s eaupaib Il'ow aquo Ismoitonul red in related

題目跟解答在講什麼😅

7-65 tert-Butyl esters [RCO₂C(CH3)3] are converted into carboxylic acids (RCO₂H) by reaction with trifluoroacetic acid, a reaction useful in pro- tein synthesis (Section 26-7). Assign E,Z designation to the double bonds of both reactant and product in the following scheme, and explain why there is an apparent change in double-bond stereochemistry: H C-OCH3 C-OCH3 CF3CO2H C=C + H2C=C(CH3)2 H3C C-OC(CH3)3 C-OH 0- H3C

第三題怎麼算ㄒ⋯⋯ㄒ

- 3. Calculate the pH of 0.10 M NH4CN. (Kb for NH3 = 1.8 x 105; K₂ for HCN = 6.2 × 10-¹0) (A) 5.79 (B) 8.21 (C) 8.87 (D) 5.13 (E) 9.23 4. Compounds X and Y have the same mass, but compound Y has two more atoms in its structure. Which statements must be true? (A) C, for compound X is greater than C, for Y (B) C, for compound X is less than C, for Y (C) Cp for

這一題畫出結構 (b）小題，我的畫法可以嗎？ 解答的畫法跟我的不一樣

Draw structures corresponding to the following IUPAC names: (a) 1,1-Dimethylcyclooctane (b) 3-Cyclobutylhexane (c) 1,2-Dichlorocyclopentane (d) 1,3-Dibromo-5-methylcyclohexa 12 a To draw a substituted cycloalkane, simply draw the ring and attach substituen specified positions. The structure in (6) is named as a cyclobutyl-substituted a because the alkyl chain has more carbons than the ring. (a) CH3 (b) CH3 1,1-Dimethylcyclooctane 3-Cyclobutylhexane c (C) CI CH3 (d) CI Br Br 1,2-Dichlorocyclopentane 1,3-Dibromo-5-methylcyclohex