Questions asked
David Collins
Numerade educator
For PbBr2, Ksp = 4.67 x 10-6. What is the molar solubility of PbBr2, in units of molarity?
Ronald Prasad
If the molar solubility of MF3 is equal to x, which expression is equal to the solubility product Ksp for MF3? Note that M represents a metal cation in the chemical formula provided. A) 27x4 B) 3х4 C)9x3 D) x³
Susan Hallstrom
Select the option that best addresses the prompt. A student has a solution with pH = 8.2. How is the hydroxide ion concentration calculated for this solution? A} [OH-] = 10-8.2 B] [OH-] = log(8.2) C] [OH-] 14.08.2 D} [OH-] = 10-14.0/10-8.2
Oluwapelumi Kolawole
What is the equilibrium constant for the solubility of Ag₂CO₃ (Ksp = 8.1 × 10⁻¹²) in NH₃? (Kf of Ag(NH₃)₂⁺ is 1.7 × 10⁷)
Jennifer Hudspeth
Which statement is an example of a basic solution assuming all quantities are measured at 25 °C? pH = 5.2 POH = 9.4 [OH-] = 3.2 × 10-3 [H3O+] = 8.2 × 10-3
Dominique Jan Tan
Given a set of weak bases, the strongest conjugate acid will come from the weak base with the ___________ Kb, and the conjugate acid itself will have the __________-Ka. lowest, lowest lowest, highest highest, lowest highest, highest
An equilibrium process is given by the expression 2 XI(g) X2(g) + I2(g) and is characterized by an equilibrium constant K. = 1.85 at a certain temperature. If the initial molar concentration of XI is 0.42 M, which expression is needed to solve for the concentration of X2(g) at equilibrium? A) 2x = 1.85 (0.42x²) B) 2x = 1.85/(0.42 − x²) C) x=2 1.85 (0.42-2x)2 D) x² = 1.85/(0.42-2x)2
What is the pH of a 0.0288 M aqueous solution of an acid having Ka= 4.65 x 10-4? A) pH = 1.54 B) pH = 1.79 C) pH = 2.46 D) pH = 3.33
What is the H3O+ concentration in an aqueous solution at 25 °C in which [OH-] = 2.30 × 10-9 M? A) [H3O+] = 4.35 × 10-6 M B) [H3O+] = 5.29 × 10-6 M C) [H3O+] = 2.30 × 10-5 M D) [H3O+] = 3.22 × 10-7 M
A student obtains a reading of pH = 5.32 for an aqueous solution of a strong acid HX. What is the molar concentration of the HX solution? A) 1.8 × 10-2 M B) 2.1 x 10-9 M C) 4.8 × 10-6 M D) 5.6 x 10-2 M