CHEM 120 Week 8 Lab Practicum - Study Guide
Chem 120 Spring SemesterLab Practicum Study Guide QUESTION 1 You are given the following pH values: Solution 1: 9.2 Solution 2: 4.8 Solution 3: 12.7 Solution 4: 1.1 Which solutions are basic? Solutions 1 & 3 – both have pH above 7.0 Which solution would have the highest concentration of H3O+ ions when dissolved in water? Solution 4 because it has the lowest pH. The lower the pH, the stronger the acid and the more H3O+ ions are dissolved in water. QUESTION 2: You are given three compounds: NaCl, CH3CH2OH (ethanol), and CaCl2. You are asked to measure out 14.7 g of each compound into three separate 500-mL flasks and add enough water to make 500-mL of solution. A chemist comes along and measures the conductivity of each of the solutions and find that both the NaCl and CaCl2 solutions are highly conductive and the ethanol solution isn’t conductive at a
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