Question

PRE- LAB QUESTIONS NAME: 1. Write a balanced chemical equation for the reaction of aluminum metal with hydrochloric acid. UAL TI3 3H2 ZAltaHCI od bw 2. Use the equation above to calculate the mass of aluminum that is needed to prepare between mL of hydrogen gas. The laboratory temperature is 22.0°C and the barometric pressure is 760.0 tor. 966 04m570 =0.0227 Pu K AT D.032 24S K 3. Calculate the minimum volume of 6.0 M HCI that you will need to carry out the reaction as described in numbers 1 and 2 above. test Nbea widn= 4.3557 Al 3259 Acel-IS 11nl D lsl d mot bauol sd neo ball Len nos mli aid 4. A hydrogen gas sample collected over water has a total pressure of 756 torr and the pressure of the water vapor is 23 torr. What is the pressure of the "dry" hydrogen gas? 78

Answer 1

3) The volume is calculated:

V HCl = 0.0227 mol H2 * (6 mol HCl / 3 mol H2) * (1000 mL HCl / 6 mol) = 7.5 mL

4) Dry H2 pressure is calculated:

P H2 = 756 - 23 = 733 torr

If you liked the answer, please rate it in a positive way, you would help me a lot, thank you.