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Quiz 15

Quiz  15

Q Quiz 15 • Points 5 • Submitting a file upload Here's a copy of Quiz #15. To answer the questions, you can write on the .pdf with a touchscreen, you can print out the quiz on paper and write in your answers, or you can write your answers on a separate sheet of paper. Save your work as a .pdf, and submit your work using the Submit Assignment button at the top of the page. QUIZ #15 – 5 points CHEM 305 Summer 2021 Answer the question below using the following data: 1 mol gas = 22.4 L at STP | MM Al(OH)3 = 78.01 g/mol | MM AlF3 = 83.98 g/mol 1) A 318 gram Aluminum hydroxide sample reacts in a sealed container with 124 L of HF gas at STP according to the balanced equation below. Calculate the Theoretical Yield (in grams) of Aluminum fluoride product that would form when the reaction is complete: 3 HF + Al(OH)3 º 3 H2O + AlF3

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1. m= 318g Al(OH)3 n= m/MM = 318g/78.01g/mol = 4.076mol = 4.08mol Al(OH)3 1mol of HF : 22.4 L Xmol of HF : 124L X=124/22.4=5.536mol=5.54mol HF According to reaction: 3 mol HF : 1 mol Al(OH)3