Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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In an analysis of metal carbonate M2CO3∙3H2O, 1.500g of the unknown carbonate was dissolved in enough water to make a 100.0mL solution. 20.00mL of such solution was treated with 10.00mL of 1.000M HCl solution, and the excess acid was titrated with 54.92mL of 0.1138M NaOH solution. The equations are given below:
CO32-(aq) + 2 H+(aq) → H2O(l) + CO2(g)
H+(aq) + OH-(aq) → H2O(l)
a) the moles of NaOH used in the titration is (enter the answer in 4 sig. figs.) Answer
mol
b) the mole of HCl reacted with the carbonate is (enter the answer in 4 sig. figs.) Answer
mol
c) the molar mass of M2CO3∙3H2O is (enter the answer in 4 sig. figs.) Answer
g/mol
d) the identity of metal M is (enter the element symbol) Answer
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