Une chem 1011 - Study guides, Class notes & Summaries

UNE CHEM 1011 LAB FINAL QUESTIONS WITH COMPLETE SOLUTIONS

Which of the following is always true? -Spontaneous changes cause an increase in the entropy of the universe -Heat will flow from a cooler object to a hotter object -Processes that involve an increase in entropy of the system are spontaneous -The change in entropy of the universe is the same as the change in entropy of the surroundings correct answer: Spontaneous changes cause an increase in the entropy of the universe A pure, perfectly crystalline solid at 0 K correct answer: has zero ...

UNE CHEM 1011 General Chemistry II Midterm Fall 2023 Questions With Complete Solutions

When are solubility equilibria established correct answer: when the dissolution and precipitation of a solute species occur at equal rates A solute with finite solubility can yield a saturated solution when it is added to a solvent in an amount exceeding its solubility, resulting in a ______ mixture of the saturated solution and the excess, undissolved solute. correct answer: heterogeneous Equilibrium constant for solubility equilibria correct answer: solubility product constant Ksp ...

une chem 1011 final week 11 & 12 questions with complete solutions

UNE chem 1011 midterm Questions With Complete Solutions

pure substance correct answer: A sample of matter, either a single element or a single compound, that has definite chemical and physical properties Examples of pure substances correct answer: elements, compounds, water, table salt (sodium chloride), ethanol, gold, bronze, etc. Mixture correct answer: A combination of two or more substances that are not chemically combined homogeneous mixture correct answer: A mixture in which substances are evenly distributed throughout the mixture ...

UNE chem 1011 final Questions With Complete Solutions

Chem 1011 Final Questions And Answers With Complete Solutions

For the reaction F2(g) ⇌ 2 F(g), the equilibrium constant at 223 °C is 7.3 x 10-13. If a sample of F2 is heated to 223 °C and allowed to reach equilibrium correct answer: nearly all of F2 will remain unreacted, with a very small amount of F present At equilibrium correct answer: the rate of the forward reaction is equal to the rate of the reverse reaction and the concentration of the reactants and products can be very different For the reaction 2 BrCl(g) ⇌ Br2(g) + Cl2(g), the equi...