CHM105D/GCH105D/FPCLS01/GLCH500 - CHEMISTRY 1 and GENERAL CHEMISTRY 1 - QUIZ
CHM105D/GCH105D/FPCLS01/GLCH500 · CHEMISTRY 1 and GENERAL CHEMISTRY 1
Tshwane University of Technology
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10 Questions
Practice 10 questions on CHM105D/GCH105D/FPCLS01/GLCH500 - CHEMISTRY 1 and GENERAL CHEMISTRY 1 at Tshwane University of Technology. Free AI-generated quiz on uNotes — track your score, retake anytime.
What is the correct equilibrium constant expression (Kc) for the decomposition of calcium carbonate: CaCO3 (s) ⇌ CaO (s) + CO2 (g)?
2Consider the endothermic reaction: H2 (g) + I2 (g) ⇌ 2 HI (g) (ΔH° > 0). If the temperature of the system is increased, how will the equilibrium shift?
3If the reaction quotient (Qc) is greater than the equilibrium constant (Kc), in which direction will the reaction proceed to reach equilibrium?
4Define a buffer solution.
5Calculate the pOH of a solution where the hydroxide ion concentration [OH-] is 0.010 M.
6For a salt with the formula M(OH)2, if 's' represents the molar solubility, what is the correct expression for the solubility product constant (Ksp)?
7If the Kb for the fluoride ion (F-) is 1.5 x 10^-11, what is the Ka for hydrofluoric acid (HF) at 25°C? (Kw = 1.0 x 10^-14)
8In the equilibrium system PCl3 (g) + Cl2 (g) ⇌ PCl5 (g), what is the effect of removing Cl2 from the reaction vessel?
9Calculate the Kc for the reaction A + B ⇌ C if the equilibrium concentrations are [A] = 0.5 M, [B] = 0.2 M, and [C] = 1.0 M.
10When 50.0 mL of 0.10 M NaOH is mixed with 50.0 mL of 0.05 M HCl, is the resulting solution acidic, basic, or neutral?
