chemistry

posted by .

Hydrogen gas can produced by the reaction between metallic aluminum and aqueous hydrochloric acid

2Al+6HCl----2AlCl3+3H2

Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes saturated with water vapor. If 271.6 mL of gas with a total pressure 1.03 atm was collected via water displacement at 29.4 °C, what is the partial pressure of hydrogen gas in the sample? How many grams of aluminum must have reacted to produce this quantity of hydrogen gas? The vapor pressure of water at 29.4 °C is 30.75 torr.

  • chemistry -

    use the given info to find water vapor pressure of water at 29.4C, then subtract that from 1.03 atm.

  • chemistry -

    sorry but i just got soo confused

  • chemistry -

    Ptotal = pH2(gas) + pH2O(gas)
    You know Ptotal and pH2O, what is pH2.
    Then PV = nRT tells you n for mols H2. From there you have a stoichiometry problem to go from mols H2 to mols Al to g Al.

  • chemistry -

    Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes saturated with water vapor. If 220.3 mL of gas with a total pressure 1.17 atm was collected via water displacement at 29.4 °C, what is the partial pressure of hydrogen gas in the sample?


    How many grams of aluminum must have reacted to produce this quantity of hydrogen gas? The vapor pressure of water at 29.4 °C is 30.75 torr.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. AP Chemistry

    Small quantities of hydrogen gas can be prepared in the laboratory by the addition of aqueous hydrochloric acid to metallic zinc. Zn(s)+2HCl(aq) -> ZnCl2(aq)+ H2(g) Typically, the hydrogen gas is bubbled through water for collection …
  2. chemistry

    Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. What mass of hydrochloric acid reacts when 87.7 grams of aluminum dissolves?
  3. chemistry

    Zinc combines with hydrochloric acid to form aqueous zinc chloride and hydrogen gas.  If 300.0 mL of a 0.150  M solution of HCl is allowed to react with excess zinc, how many moles of hydrogen gas would be produced?
  4. chemistry

    Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes saturated with water vapor. If 238.4 mL of gas with a total pressure 1.27 atm was collected via water …
  5. Chemistry 171 Lab

    Suppose we collect hydrogen gas, H2(g), over water at 21◦C in a vessel with total pressure of 743 Torr. If the hydrogen gas is produced by the reaction of aluminum with hydrochloric acid: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) …
  6. Chemistry

    What mass of hydrogen gas is produced when 3.0 mol of iron react with excess hydrochloric acid according to the reaction below 2Fe + 6HCl --> 2FeCl3 + 3H2
  7. Chemistry

    What mass of hydrogen gas is produced when 3.0 mol of iron react with excess hydrochloric acid according to the reaction below 2Fe + 6HCl --> 2FeCl3 + 3H2
  8. Chemistry

    What mass of hydrogen gas is produced when 3.0 mol of iron react with excess hydrochloric acid according to the reaction below 2Fe + 6HCl --> 2FeCl3 + 3H2
  9. Chemistry

    What mass of hydrogen gas is produced when 3.0 mol of iron react with excess hydrochloric acid according to the reaction below 2Fe + 6HCl --> 2FeCl3 + 3H2
  10. Chemistry

    What mass of hydrogen gas is produced when 3.0 mol of iron react with excess hydrochloric acid according to the reaction below 2Fe + 6HCl --> 2FeCl3 + 3H2

More Similar Questions