me commercial antacid tablets contain CaCO, which neutralizes excess HCI in the
ID: 590245 • Letter: M
Question
me commercial antacid tablets contain CaCO, which neutralizes excess HCI in the stomach to form carbon dioxide and water. How many mL of CO2 gas is produced at 37 and 1.02 atm pressure when 80mL of 0.050 MHCI reacts completely with CaCO, in an antacid tablet? (4) (SET THE PROBLEM AND SHOW ALL WORKING) 4. So Caco, (s) + 2HC (aq) CaC, (aq) + CO2 (g) + H2O (l) Neon gas inside a gas cylinder with a volume of 1.0L is exerting a pressure of 101 kPa at 22°C what will be the final volume of Neon, if all of this gas is allowed to expand in another container where it exerts a pressure of 1.3 kPa at 19°C. (Do not change kPa to any other units for pressure). (4) (WRITE THE FORMULA) 5. PART B: Write the answer and mark the scantron. (10 X3 30) 1) Which of the following molecules can form hydrogen bonds? A) CH4 B) NaH C) NH3 D) BH3 E) HI Answer: 2) CxHu does not dissolve in water because A) CuHv is polar. B) CsHx is nonpolar C) water is nonpolar D) water is saturated E) CsHs is hydrated. Answer: Response on this test is a TRUE Reflection of my knowledge and understanding of the concents in the chanters sien)Explanation / Answer
Q4
mol of HCL = MV = 0.05*80*10^-3 = 0.004 mol of HCl
raito is
1:2
mol ofCaCO3 = 1/2*mol of Hcl = 1/2¨*0.004
mol of CaCO3 = 0.002
then
mol of CO2 expected --> 0.002 mol of CO2
PV = nRT
V = nRT/P
V = (0.002)(0.082)(37+273)/(1.02
V = 0.04984 L
V = 49.84 mL of CO2
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