Question
13. A sample of solid Ca(OH)2 was stirred in water at a certain temperature until the...
13. A sample of solid Ca(OH)2 was stirred in water at
a certain temperature until the solution contained as much
dissolved Ca(OH)2 as it could hold. A 97.7-mL sample of
this solution was withdrawn and titrated with 0.0687 M
HBr. It required 57.8 mL of the acid solution for
neutralization.
(a) What was the molarity of the Ca(OH)2 solution?
_____ M
(b) What is the solubility of Ca(OH)2 in water, at the
experimental temperature, in grams of Ca(OH)2 per 100 mL
of solution?
______ g/100mL
14.)(a) How many milliliters of 0.165 M HCl are needed
to neutralize completely 25.0 mL of 0.101 M
Ba(OH)2 solution?
30.6060 ml
(b) How many milliliters of 3.50 M
H2SO4 are needed to neutralize 25.0 g of
NaOH?
______ mL
(c) If 54.8 mL of BaCl2 solution is needed to
precipitate all the sulfate in a 534 mg sample of
Na2SO4 (forming BaSO4), what is
the molarity of the solution?
0.069M
(d) If 37.5 mL of 0.375 M HCl solution is needed to
neutralize a solution of Ca(OH)2, how many grams of
Ca(OH)2 must be in the solution?
__________ g
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