12-6: Stoichiometric Gas Problems Chapter 12 Dr. Robert Belford & Rebekah Reinhart

Question 1
 How many grams of Al(s) are needed to form 36.3L of H2(g) at STP? (A)  29.1g Al(s) (B)  65.6 g Al(s) (C)  11.0 g Al(s) (D)  NOTA Hint

Question 2
 If 72.4 grams of Al(s) were allowed to completely react with HCl(aq) at 2.5atm and 35.1oC, what would be the resulting H2(g) volume? (A)  37.8L H2(g) (B)  15.7L H2(g) (C)  40.7L H2(g) (D)  NOTA Hint

Question 3
 Calculate the temperature at which 3.14 moles of H2(g) are formed from the reaction of Al(s) with HCl(aq) at a pressure of 1.7atm and a volume of 57.2 liters. (A)  197oC (B)  104oC (C)  165oC (D)  NOTA Hint

Question 4
 What pressure would result if 18.6 grams of Al(s) reacted with excess HCl to form H2(g) with a volume of 27.6 liters and a temperature of 42.0oC? (A)  0.874 atm (B)  0.910 atm (C)  0.965 atm (D)  NOTA Hint

Question 5
 What volume of H2(g) would be produced from a reaction with 76.6 grams Al(s) and 250. mL of 5.64M HCl(aq) at STP? (A)  15.8 L H2(g) (B)  48.5H2(g) (C)  26.8LH2(g) (D)  NOTA Hint