chem

posted by .

A 0.069 gram sample of a metal reacted with HCl and produced 45.31 mL of H
2
gas at
25¡ÆC and 1 atm pressure. The metal is known to react with HCl according to the following
reaction,
2 M + 6 HCl
> 2 MCl
3
+ 3 H
2
What is the molar mass of the metal? Which metal is it?

  • chem -

    You would do better to write your equations in a left to right line (horizontal) rather than a vertical line.

    2M + 6HCl>>> 2MCl3 + 3H2
    Use PV = nRT and solve for n H2 gas.
    Using the coefficients in the balanced equation, convert mols H2 to mols M. Then mols = grams/molar mass. You know grams and mols, solve for molar mass.
    Then identify the element from the periodic table.
    NOTE: This metal actually forms MCl2 with HCl and not MCl3.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem

    a 2.747g sample of manganese metal is reacted with excess HCl gas to produce 3.24L of H2 at 366K and .927atm and a manganese chloride compound(MnCl0. What is the formula of the manganese chloride compound produced in the reaction?
  2. science

    A 2.747-g sample of manganese metal is reacted with excess HCl gas to produce 3.22 L of H2 at 373 K and 0.951 atm and manganese chloride compound (MnClx) what is the formula of manganese chloride compond produced in the reaction?
  3. chem

    When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 1.0 M HCl is required to react completely with 4.00 g of magnesium i did 4.00g x (mol/24.31 g Mg) x (2 mol …
  4. chemistry

    Q1) 5 liters of Butane gas (C4H10) is reacted with plenty of oxygen at 27 oC and 1 atm to produce carbon dioxide and water vapor. Calculate the following: 1- The volume of CO2 produced at 1 atm and 400 oC. 2- The mass of H2O vapor …
  5. chemistry

    All of the lanthanide metals react with HCl to form compounds having the formula MCl2,MCl3,or MCl4 (where M represents the metallic element). Each metal forms a single compound. A chemist has .250g sample of a transition metal, and …
  6. Chemistry

    A 0.188g sample of unknown metal, X (s), produced 71.4 ml of hydrogen gas when reacted with HCL according to the equation: X(s)+2HCL(aq)--->XCl2(aq)+H2(g) The gas was collected over water at 23 degrees Celsius. The levels of water …
  7. Chemistry

    Need help solving this problem. A 0.188g sample of unknown metal, X (s), produced 71.4ml of hydrogen gas when reacted with HCl according to the equation: X(s)+2HCl(aq)--> XCl2(aq)+H2(g) The gas was collected over water at 23 degrees …
  8. Chemistry

    Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.970-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of …
  9. science

    5.0g of magnesium metal reacted with 1000cm3 of 4.5M HCl solution to produce hydrogen gas. Calculate the amount of HCl left after the reaction
  10. Chemistry

    Calculate the percent purity of a sample of zinc metal if 325 mL of hydrogen gas is collected by water displacement at a temperature of 22.0 C and an atmospheric pressure of 745.0 mm Hg when 1.12 g of the sample is reacted with excess …

More Similar Questions