Fundamentals Of Analytical Chemistry
9th Edition
ISBN: 9781285640686
Author: Skoog
Publisher: Cengage
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Nickel sulfate, NiSO 4 , reacts with sodium phosphate, Na 3 PO 4 , to give a pale yellow-greenprecipitate of nickel phosphate, Ni 3 (PO 4 ) 2 , and a solution of sodium sulfate, Na 2 SO 4.. How manymilliliters of 0.375 M N i SO 4 will react with 45.7 mL of 0.265 M Na 3 PO 4 ? . Show balanced chemicalreaction of the problem.
A 3.026 grams of Cu (II) salt is dissolved in water and then diluted to 250 mL in a volumetric
flask. Iodine is liberated when one gram of KI solution is added to 50.0 mL of aliquot sample. A
23.33 mL of 0.04668 M Na,S,O, solution is required to titrate the iodine liberated. Calculate the
weight percent of the Cu in the salt.
(A) 11.43%, just before end point
(B) 12.43%, just before end point
(C) 11.43%, after equivalence point
(D) 12.43%, after equivalence point
The thermodynamic solubility product of A9CN is 6.0×10-17.
(a) What is [Ag+] in a 0.033 M KNO3 solution?
4.0
7.75e-9
mol·L-1
(b) What is [Ag+] in a 0.033 M KCN solution?
4.0 1.81e-16
X mol·L-1
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