The molar mass of a metal carbonate can be determined by adding an excess of HCl to completely react with the carbonate and then “back –titrating” the excess acid with NaOH. If 20.0 mL of 0.0800 M HCl was added to a 0.1022 g sample of MCO3, the excess HCl required 5.64 mL of 0.1000 M NaOH for neutralization. Find the molar mass of MCO3 and identify M.

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter4: Reactions In Aqueous Solution
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The molar mass of a metal carbonate can be determined by adding an excess of HCl to completely react with the carbonate and then “back –titrating” the excess acid with NaOH. If 20.0 mL of 0.0800 M HCl was added to a 0.1022 g sample of MCO3, the excess HCl required 5.64 mL of 0.1000 M NaOH for neutralization. Find the molar mass of MCO3 and identify M.

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