1 - 9701_w16_qp_23 : Moles and Stoichiometry, Moles and Concentration

To join our Free Trial Lesson, Join our Whatsapp Community Now! https://chat.whatsapp.com/CWSRaMi4i3w... or msg at +92 323 509 4443 To purchases recorded courses with notes https://megalecture.com/courses/ A 0.17g sample of a Group 14 chloride, XCl4, reacted with water to produce an oxide, XO2, and HCl. equation 1 XCl 4(s) + 2H2O(l) → XO2(s) + 4HCl(aq) The HCl produced was absorbed in 100cm3 of 0.10moldm–3 sodium hydroxide solution (an excess). In a titration, the unreacted sodium hydroxide solution required 30.0cm3 of 0.20moldm–3 hydrochloric acid for complete neutralisation. (a) Calculate the amount, in moles, of hydrochloric acid used in the titration to neutralise the unreacted sodium hydroxide solution. (b) Write the equation for the reaction between hydrochloric acid and sodium hydroxide. (c) Calculate the amount, in moles, of sodium hydroxide neutralised in the titration. (d) Calculate the amount, in moles, of sodium hydroxide that reacted with the HCl produced by the reaction in equation 1. (e) Calculate the amount, in moles, of HCl produced by the reaction in equation 1. (f) Calculate the amount, in moles, of XCl4 in the original 0.17g sample. (g) Calculate the molecular mass, Mr, of XCl 4. (h) Calculate the relative atomic mass, Ar, of X and suggest its identity For more Video Lectures for O Levels, A Levels, IB Diploma, AP Courses & Edexcel: https://www.megalecture.com    / megalecture   For Skype/Whiteboard Subject Experts and Tutors and Free Online Trial Classes, Contact: [email protected]