Solved Questions

Category: Chemistry
How many liters of chlorine gas, Cl2​, can be obtained at 40°C and 787 mmHg from 9.41 g of hydrogen chloride, HCl, according to the following equation? 2KMnO4​(s)+16HCl(aq)→8H2​O(l)+2KCl(aq)+2MnCl2​(aq)+5Cl2​(g)
Coursepivot December 1, 2022 13:20
Explanation For this question, we shall be using the ideal gas law equation, PV = nRT. Where P is in atm, V in liters, R = 0.08206 L-at/ mol-K and (View full solution)
Category: Chemistry
Two golfers are practicing shots around a putting green. Each golfer takes 2020 shots. Golfer 1 has 77 shots within 11 meter of the hole, and the other 1313 shots are scattered around the green. Golfer 2 has 1717 shots that go into a small sand trap near the green and 33 just on the green near the t...
Coursepivot November 17, 2022 01:22
Explanation Explanation In order to understand the observation, it is important to understand the meaning of the two terms. Accuracy refers to degree of closeness to actual value while precision (View full solution)
Category: Chemistry
Thymol is very slightly soluble in water and very soluble in 1.0M\mathrm{NaOH}1.0MNaOH. Explain.
Coursepivot November 4, 2022 08:56
Answer Answer: Thymol is highly non polar because of the presence of; 1) Hydrophobic benzene ring 2) Hydrophobic isopropyl group ((CH3)2CH-) 3) Hydrophobic methyl (-CH3) group These three entities in (View full solution)
Category: Chemistry
Although cannabinol and methyl alcohol are both alcohols, cannabinol is very slightly soluble in methyl alcohol at room temperature. Explain.
Coursepivot November 4, 2022 08:55
Explanation CH3OH (methyl alcohol) is polar due to polar O-H bond and it has only small non-polar organic group attached (-CH3). While in case of cannabinol, there is large number (View full solution)
Category: Chemistry
Explain the results for the tube in which 1.0 M NaOH was added to benzoic acid. Write an equation for this giving complete structures for all organic substances. Now describe what happened when 6.0 M HCl was added to this same tube, and explain this result.
Coursepivot November 4, 2022 08:54
Explanation Benzoic acid, although it has a polar group (-COOH), the benzene ring (non polar group) renders the molecule insoluble in water. Upon reaction with base, it forms a negatively (View full solution)
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