Determining the oxidation number of an element in a molecule.
What is the oxidation number of iron in Fe(CN6)-4?
For AgCl, what will occur if 250ml of 1.5 A 10(exponent negative 3)M of NaCl is mixed with 250mL of 2.0 A 10(exponent negative 7)M of AgNO3? a. A precipitate would form because Ksp>P b. A precipitate would form because P>Ksp c. No precipitate would form because Ksp>P d. No precipitate would form because P>Ksp e. No ...continues
Determining the effect that a salt has on a molecule at equilibrium conditions.
Consider the equilibrium of Mg(OH)2(s) in water. What would be the effect of adding KCl? a. The KCl has no effect on the system b. Reaction goes to the right c. Reaction goes to the left d. Silver chloride solubility increases e. Silver dichloride precipitates
A multiple choice question determining the effects of adding a common ion at equilibrium.
Consider the equilibrium of AgCl(s) in water. What is the effect of adding KCl? a. The KCl has no effect b. The reaction goes to the right c. The reaction goes to the left d. Silver chloride solubility increases e. Silver dichloride precipitates
Multiple choice question regarding the effects of lowering the pH of a solution at equilibrium.
Consider the equilibrium of Mg(OH)2 in water. What is the effect of lowering the pH of the solution? a. Mg(OH)2(s) precipitates b. The concentration of hydroxide ion increases c. The concentration of Mg2+ decreases d. Mg2+(aq) is reduced to Mg(s) e. None of the above
Multiple choice question regarding the classification of a d orbital.
Which of the following is not a d orbital? a. dz2 b. dx2_y2 c dyz d. dxy - yz e. dxz
For Ca(OH)2, what will occur if 1.0L of 0.100M Ca(NO3)2 is prepared at pH 12.00? a. A precipitate will form because Ksp>P b. A precipitate will form because P>Ksp c. No precipitate will form because Ksp>P d. No precipitate will form because P>Ksp e. No precipitate will form because P=Ksp
Calculating the solubility in moles per liter of a molecule in pure water.
What is the solubility of PbBr2 in water in moles per liter?
What is the water solubility of CaSO4 in 0.25M Ca(NO3)2? M=?
Determining which cations will precipitate as chloride salts.
Which of the following will precipitate as chloride salts: Ag+, Pb2+, Ca2+, K+, and Cu2+? a. Ag+ b. Pb2+, Ca2+, and Cu2+ c. Ag+, K+, and Cu2+ d. Ag+ and Pb2+ e. Ca2+ and Cu2+
