H2O e. NH3. CxHy + n O2 x CO2 + y H2O Perbandingan CO2 dan H2O sebesar = 1 : 1,5 = 2:3 Dengan demikian, x = 2 dan y = 3 y = 6 Disimpulkan bahwa hidrokarbon tersebut adalah C2H6 Jawaban: A Berdasarkan Hukum Dulong dan Petit, didapat perhitungan: Ar kira-kira = , 6/ 7 = , 6/ 7. Calcula la masa de hipoclorito de calcio que es necesaria para que se formen 0,560 l de Cl2 gas en c.n. Ca(ClO)2 + HCl CaCl2 + Cl2 + H2O. (Sol: 1,78 g ) Calcula el volumen de disolución de HCl 1,5 M que consumiría la reacción anterior. Scholar Assignments are your one stop shop for all your assignment help needs.We include a team of writers who are highly experienced and thoroughly vetted to ensure both their expertise and professional behavior. Academia.edu is a platform for academics to share research papers. By adding a small amount of K2CrO4 to the solution containing the analyte, the formation of a precipitate of reddish-brown Ag2CrO4 signals the end point. PbCrO4 → Yellow ppt. Studyres contains millions of educational documents, questions and answers, notes about the course, tutoring questions, cards and course recommendations that will help you learn and learn. Question 1.3 Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen by mass. Ag+ + Cl- = AgCl(s) White precipitate 2Ag+ + CrO42- = Ag2CrO4(s) Red precipitate A second end point is the Volhard method in which Ag+ is titrated with SCN- in the presence of Fe3+. A solution is prepared by mixing 50.0 ml of 0.0100 M lead(II) nitrate with 50.0 ml of 0.0200 M sodium bromide. 配平下列各反应方程式: (本题 10 分) （1）Cr2O7- +14 H+ + 6Fe 2+ = 2） 、 2MnO4- +5H2O2 + 6H+ = 2 Cr3+ +6 Fe 3+ +7 H2O 2Mn2+ +5 O2 + 8H2O 42.B 43.B 44.B 45.A 46.A 47.A 48.A 49.A 3） 、 2Fe3+ +Cu = 2 Fe 2+ + Cu 2+ 4） 、 2Cu2+ +4 I - = 2CuI + I 2 5） 、 AgBr +2S2O32- … 沉淀在溶液中达到沉淀溶解平衡状态时，各离子浓度保持不变( 或一定) ，其离子浓度幂的乘积为一个常数，这个常数称之为溶度积常数，简称溶度积。溶度积与溶解度都可以表示难溶电解质的溶解性，但二者也有差异。 Find the training resources you need for all your activities. Ke dalam wadah 1 L dimasukkan 3 mol CO dan 3 mol H2O, sesuai dengan persamaan reaksi: CO (g) + H2O (g) ↔ CO2 (g) + H2 (g) Jika pada keadaan setimbang terdapat 0,5 mol CO2, tentukan Kc! NCERT Exercises Questions. ... H2O and different … View Answer. We also have a team of customer support agents to deal with every difficulty that you may face when working with us or placing an order on our website. Given that the maximum concentration of Ag2CrO4 … 122,94. Question 1.4 Calculate the amount of … H2O OF2 OCl2 HOH 104.5 ° FOF 103 ° ClOCl 111 ° With lone pairs on the central atom, the bond angle will not be the AX4 109.5 °. (Sol: 33 ml) 28.- BaCrO4 → Yellow ppt. Question 1.1 Calculate the molecular mass of the following : (i) H2O (ii) CO2 (iii) CH4 Question 1.2 Calculate the mass per cent of different elements present in sodium sulphate (Na2SO4). Dichromates are generally soluble. FeCrO4 → Green ppt. Ag2CrO4 → Red ppt. 普通化学试题(大学期末复习）.doc,成绩 普通化学考试试题（卷） 开课学院 理 学 院 课程 普 通 化 学 学时 48 考试日期 考试时间 2 小时 考试形式（ 闭 ）（ A ）卷 考生班级 学 号 姓 名 （注意：所有答案一律写在答题纸上，考试结束后将答题纸和试卷同时交回。 Who We Are.