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Question 1 1. Recall that a solution, aka a homogeneous mixture, is uniform throughout but can vary in composition (eg. 2% vs 4% milk). The...

CHM 113 H.W all questions are in the file

Question 1 1. Recall that a solution, aka a homogeneous mixture, is uniform throughout but can vary in composition (eg. 2% vs 4% milk). The components of a solution are the -------------- (the component in the greatest quantity and the---------------- (s) (the component(s) in the lesser quantities). Question 2 1. Solutions can exist with substances in any of the 3 states (or phases) of matter. For example, sterling silver is a mixture of 2 solids, silver and copper. Soda pop (eg. Pepsi) is a mixture of substances in 2 phases, those phases are--------------- and------------ . Question 3 1. Now that you are familiar with enthalpy changes we will look at solvation (an ionic solid dissolving in water) in terms of ΔH, what are the endothermic processes in the formation of these solutions? ----------------- And ---------------- . Question 4 1. Define: i) spontaneous ii) entropy Question 5 1. Dynamic equilibrium ” means that two opposing processes are occurring at equal rates. what are the two processes that are in equilibrium? ----------------- And ----------------- . This means that this solution is at or above what condition? --------------------- . 0.5 points Question 6 1. When two liquids will mix completely in all proportions they are said to be ---------------------- . Liquids that do not mix, but separate, are said to be ------------------ . Question 7 1.
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Chemists often use the phase “like dissolves like” to describe liquids that will mix with each other. From this statement it follows that non-polar liquids will only dissolve in ---------------------- solvents. What forces are responsible for the attractions between non-polar molecules? ------------------------ . Question 8 1. Pressure also plays a role in solubility, describe why a bottle of soda pop bubbles profusely when opened. (Refer to Fig. 3.16): Question 9 1. Because composition is variable in solutions it is important to be able to quantify and express the concentration of solutions. Be sure to always watch the units because there are multiple ways of expressing concentrations. Question 10 1. Recall the units of molarity, they are: Question 11 1. In mass % of a component in a mixture a 5% NaCl solution could be stated as -------------------- grams of NaCl for each ---------------------- grams of solution. Question 12 1. PPM stands for [a] Question 13 1. Molality is often used when the solvent in not water or at high temperatures. It is defined as: Question 14 1. There are four colligative properties. Name them. 1 2 3 4
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1) Recall that a solution, aka a homogeneous mixture, is uniform throughout but can vary in composition (eg. 2% vs 4% milk). The components of a solution are the water (the
component in the...

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