Problem 81
If \(30.0 \mathrm{~mL}\) of \(0.150 \mathrm{M} \mathrm{CaCl}_{2}\) is added to \(15.0 \mathrm{~mL}\) of \(0.100 \mathrm{M} \mathrm{AgNO}_{3},\) what is the mass in grams of \(\mathrm{AgCl}\) precipitate?
Problem 82
A sample of \(0.6760 \mathrm{~g}\) of an unknown compound containing barium ions \(\left(\mathrm{Ba}^{2+}\right)\) is dissolved in water and treated with an excess of \(\mathrm{Na}_{2} \mathrm{SO}_{4}\). If the mass of the \(\mathrm{BaSO}_{4}\) precipitate formed is \(0.4105 \mathrm{~g}\), what is the percent by mass of Ba in the original unknown compound?
Problem 83
How many grams of \(\mathrm{NaCl}\) are required to precipitate most of the Ag ions from \(2.50 \times 10^{2} \mathrm{~mL}\) of a \(0.0113 \mathrm{M} \mathrm{AgNO}_{3}\) solution? Write the net ionic equation for the reaction.
Problem 84
Calculate the concentration (in molarity) of an \(\mathrm{NaOH}\) solution if \(25.0 \mathrm{~mL}\) of the solution is needed to neutralize \(17.4 \mathrm{~mL}\) of a \(0.312 \mathrm{M} \mathrm{HCl}\) solution.
Problem 85
Calculate the volume in milliliters of a \(1.420 \mathrm{M} \mathrm{NaOH}\) solution required to titrate the following solutions: a) \(25.00 \mathrm{~mL}\) of a \(2.430 \mathrm{M} \mathrm{HCl}\) solution b) \(25.00 \mathrm{~mL}\) of a \(4.500 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\) solution c) \(25.00 \mathrm{~mL}\) of a \(1.500 \mathrm{M} \mathrm{H}_{3} \mathrm{PO}_{4}\) solution
Problem 86
What volume of a \(0.500 \mathrm{M} \mathrm{HCl}\) solution is needed to neutralize each of the following: a) \(10.0 \mathrm{~mL}\) of a \(0.300 \mathrm{M} \mathrm{NaOH}\) solution b) \(10.0 \mathrm{~mL}\) of a \(0.200 \mathrm{M} \mathrm{Ba}(\mathrm{OH})_{2}\) solution
Problem 88
Determine the mass of product that will precipitate when \(150.0 \mathrm{~mL} 0.2753 \mathrm{M} \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}(a q)\) and \(220.5 \mathrm{~mL}\) of \(0.1873 \mathrm{M} \mathrm{NaI}(a q)\) are combined.
Problem 90
Determine the mass of product that will precipitate when \(125.2 \mathrm{~mL} 0.8015 \mathrm{M} \mathrm{AgNO}_{3}\) and \(50.00 \mathrm{~mL}\) of \(0.7850 \mathrm{M} \mathrm{Na}_{2} \mathrm{Cr} \mathrm{O}_{4}\) are combined.
Problem 91
For each of the following pairs of combinations, indicate which one will produce the greater mass of solid product: a) \(105.5 \mathrm{~mL} 1.508 \mathrm{M} \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\) and \(250.0 \mathrm{~mL}\) \(1.2075 \mathrm{M} \mathrm{KCl}\) or \(138.5 \mathrm{~mL} 1.469 \mathrm{M} \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\) and \(100.0 \mathrm{~mL} 2.115 \mathrm{M} \mathrm{KCl}\) b) \(32.25 \mathrm{~mL} 0.9475 \mathrm{M} \mathrm{Na}_{3} \mathrm{PO}_{4}\) and \(92.75 \mathrm{~mL} 0.7750 \mathrm{M}\) \(\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) or \(52.50 \mathrm{~mL} 0.6810 \mathrm{M} \mathrm{Na}_{3} \mathrm{PO}_{4}\) and \(39.50 \mathrm{~mL} 1.555 \mathrm{M}\) \(\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\) c) \(29.75 \mathrm{~mL} 1.575 \mathrm{M} \mathrm{AgNO}_{3}\) and \(25.00 \mathrm{~mL} 2.010 \mathrm{M}\) \(\mathrm{BaCl}_{2}\) or \(52.80 \mathrm{~mL} 2.010 \mathrm{M} \mathrm{AgNO}_{3}\) and \(73.50 \mathrm{~mL} 0.7500 \mathrm{M}\) \(\mathrm{BaCl}_{2}\)
Problem 96
Oxygen \(\left(\mathrm{O}_{2}\right)\) and carbon dioxide \(\left(\mathrm{CO}_{2}\right)\) are colorless and odorless gases. Suggest two chemical tests that would allow you to distinguish between these two gases.
