Chemistry

posted by .

excess magnesium is reacted with 45 grams of sulfuric acid. 9.5 liters of hydrogen gas are collected understand conditions of temperature and pressure. what is the percentage of hydrogen sulfate and of water in the acod solution?

  • Chemistry -

    Mg + H2SO4 ==> MgSO4 + H2
    mols H2 = 9.5L/22.4L = 0.5 ESTIMATED so you should redo the calculation as well as all that follow for they are estimates also.
    0.5 mol H2 means you started with 0.5 mol H2SO4
    g H2SO4 = mols H2SO4 x molar mass H2SO4 = estimated 42 grams
    The solution had a mass of 45g, 42 of that was H2SO4 so 3 must have been H2O.
    %H2SO4 = (42/45)*100 = ?
    %H2O = (3/45)*100 = ?
    Remember to recalculate all of these numbers.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem 3A

    please help me with these homework problems from chemistry because the teacher did not give enough information to some of these chemistry work problems. 1) 50.0 g of aluminum is reacted with excess sulfuric acid. The chemical equation …
  2. 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 …
  3. Chemistry

    A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was collected over water at 21.0 degrees Celsius. The levels of water inside and outside the gas collecting tube …
  4. AP Chemistry

    A mixture of aluminum and zinc metal is used in 2 experiments described below: A- A 1.7 gram sample of the mixture is reacted with excess hydrochloric acid and the resulting hydrogen gas is collected over water. The reaction takes …
  5. chemistry

    A 0.0677 g sample of magnesium metal reacted with excess hydrochloric acid solution to produce 69.9 mL of hydrogen gas. The gas was collected over water at 21.0° C. The levels of water inside and outside the gas collecting tube are …
  6. chemistry

    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 …
  7. chemistry

    Under SATP, magnesium was reacted with acid and 500 ml of hydrogen gas was collected over water. A) what is the vapor pressure of water?
  8. Chemistry

    A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by reaction of 0.450 …
  9. Chemistry-DrBob222

    A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by reaction of 0.450 …
  10. Chemistry

    In need of help setting up each of these problems. Under the conditions in a laboratory experiment, 0.0513 grams of aluminum (At. Wt.=27.0) was reacted with excess hydrochloric acid to produce hydrogen gas according to the following …

More Similar Questions