Module 5 Unit 2 Assignment A

Assignment Part A By: Connie Warburton 1. In the reaction: 2Fe (s) + 3Cl 2 (g)  2FeCl 3 (s) a)How many moles of chlorine gas react with 0.333 mol of metallic iron? (2 marks) 0.333 mol Fe x 3 mol Cl 2 = 0.4995 mol Cl 2 2 mol Fe b)How many moles of iron (III) chloride are produced? (2 marks) 0.333 mol Fe x 2 mol FeCl 3 = 0.333 mol FeCl 3 2 mol Fe Molar ratios: 2 mol Fe / 3 mol Cl 2 3 mol Cl 2 / 2 mol Fe 3 mol Cl 2 / 2 mol FeCl 3 2 mol FeCl 3 / 2 mol Fe 2 mol FeCl 3 / 3 mol Cl 2 2 mol Fe / 2 mol FeCl 3 Show all molar ratios and required calculations. 2. In the reaction: Zn (s) + 2HCl (aq)  ZnCl 2 (aq) + H 2 (g) How many moles of zinc chloride would be formed from the reaction of 1.38 mol Zn with HCl? (2 marks) 1.38 mol Zn x 1 mol Zn = 0.69 mol zinc chloride 2 mol HCl Molar ratios: 1 mol Zn / 2 mol HCl 1 mol Zn / 1 mol ZnCl 2 1 mol Zn / 1 mol H 2 2 mol HCl / 1 mol Zn 2 mol HCl / 1 mol ZnCl 2 2 mol HCl / 1 mol H 2 1 mol ZnCl 2 / 1 mol Zn 1 mol ZnCl 2 / 2 mol HCl 1 mol ZnCl 2 / 1 mol H 2 1 mol H 2 / 1 mol Zn 1 mol H 2 / 2 mol HCl 1 mol H 2 / 1 mol ZnCl 2 Show all molar ratios and required calculations. 1

3. In the reaction N 2 + 3H 2 → 2NH 3 How many moles of hydrogen, H 2 , are needed to react with 2.0 moles of nitrogen, N 2 ? (2 marks) 2.0 mol N 2 x 3 mol H 2 = 6 mol H 2 1 mol N 2 Molar Ratios: 1 mol N 2 / 3 mol H 2 1 mol N 2 / 2 mol NH 3 3 mol H 2 / 1 mol N 2 3 mol H 2 / 2 mol NH 3 2 mol NH 3 / 1 mol N 2 2 mol NH 3 / 3 mol H 2 Show all molar ratios and required calculations. 4. In the reaction K 3 PO 4 + Al(NO 3 ) 3 → 3KNO 3 + AlPO 4 How many moles of potassium nitrate are produced when 2.5 moles of potassium phosphate react? (2 marks) 2.5 mol K 3 PO 4 x 3 mol KNO 3 = 7.5 mol KNO 3 1 mol K 3 PO 4 Molar ratios: 1 mol K 3 PO 4 / 1 mol Al(NO 3 ) 3 1 mol K 3 PO 4 / 3 mol KNO 3 1 mol K 3 PO 4 / 1 mol AlPO 4 1 mol Al(NO 3 ) 3 / 1 mol K 3 PO 4 1 mol Al(NO 3 ) 3 / 3 mol KNO 3 1 mol Al(NO 3 ) 3 / 1 mol AlPO 4 3 mol KNO 3 / 1 mol K 3 PO 4 3 mol KNO 3 / 1 mol Al(NO 3 ) 3 3 mol KNO 3 / 1 mol AlPO 4 1 mol AlPO 4 / 1 mol K 3 PO 4 1 mol AlPO 4 / 1 mol Al(NO 3 ) 3 1 mol AlPO 4 / 3 mol KNO 3 Show all molar ratios and required calculations. 5. Use the following equation to solve the problems below: 3 SiO 2 + 4 Al 3 Si + 2 Al 2 O 3 If 6.0 moles of SiO 2 react, how many moles of: a) Al react? (2 marks) 6.0 mol SiO 2 x 4 mol Al = 8 mol Al 3 mol SiO 2 b) Si are produced? (2 marks) 2

References: Fanshawe College. (2023) “Module 5 Unit 2 Presentation” retrieved from https://olmoodle.ontariolearn.com/mod/scorm/player.php? a=8781¤torg=articulate_rise&scoid=17772&sesskey=SGw7RV8hGW &display=popup&mode=normal 4