How many grams of NaCl are required to precipitate most of the Ag ions from 250

# How many grams of nacl are required to precipitate

• Homework Help
• schooljunkie0401
• 6
• 100% (12) 12 out of 12 people found this document helpful

This preview shows page 3 - 5 out of 6 pages.

8.How many grams of NaCl are required to precipitate most of the Ag+ions from 2.50 × 102mL of 0.0113 M AgNO3solution? Write the net ionic equation for the reaction. (5 points) 9.What volume of 0.416M Mg(NO3)2should be added to 255 mL of 0.102 M KNO3to produce a solution with a concentration of 0.278 M NO3ions? Assume volumes are additive. (4 points) 3 Copyright © 2017 by Thomas Edison State University . All rights reserved. 10.Describe how to prepare 1.00 L of 0.646 MHCl solution, starting with 2.00 MHCl solution. (4 points) 11.Calculate the volume in mL of a 1.420 MNaOH solution required to titrate the following solutions: (9 points) a. 25.00 mL of a 2.430 M HCl solution b. HCl+NaOH= NaCl+H2O c. Balanced d. Moles of HCl= 2.43*.06075 e. 1:1 ratio f. Moles of NaOH = .06075 g. V= .06075/1.42= 42.8 ml h. 25.00 mL of a 4.500 M H 2 SO 4 solution - H2SO4+2NaOH=Na2SO4+2H20 - 2 moles of base per acid - HCl moles= .1125 - NaOH= .225 - .225/1.42= 158 ml i. 25.00 mL of a 1.500 M H 3 PO 4 solution - H3PO4+3NaOH=Na3PO4+3H20 - 3 moles per acid - H3PO4 moles = .0375 - NaOH moles= .1125 - .1125/1.42= 76.2 ml (Reference: Chang 4.91)  • • • 