Answer:
Using the concepts learned on dilute and concentrated solutions, and percent by mass and volume of solutions, explain what is asked in the given situations. Refer to the rubric to check your answer.
1. The use of rubbing alcohol in the COVID-19 pandemic is a global necessity. At times isopropyl alcohol is out of stocks because it is a global problem in terms of production or the prize is very high. Upon knowing that a disinfectant must at least contain 60-70% isopropyl or ethyl alcohol and 30-40% distilled water, how are you going to dilute a 250mL gin solution containing 80% ethyl alcohol to 70% to make it an efficient disinfectant?
Rubric in scoring:
Correct identification of given with correct unit - 1 point
Correct identification of what is asked with correct unit -1 point
Solution (showing the correct mathematical operation) -1 point
Showing the correct answer with correct unit - 2 point
2. Explain why water is very important in the dilution process of a solution.
Rubric in scoring:
Giving 1 to 2 reasons - 2 points
Correct English grammar - 1 point
Explanation:
