Sunday
March 26, 2017

Post a New Question

Posted by on .

Solid magnesium metal reacts with chlorine gas according to the following equation:

Mg + Cl2 --> MgCl2

What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2

  • chemistry - ,

    This is a limiting reagent problem. You know that when BOTH reactants are given.

    Convert 7 g Mg to moles. moles = grams/molar mass
    Convert 13.2 grams Cl2 to moles.

    Using the coefficients in the balanced equation, convert mole Mg to moles MgCl2.
    Same process, convert moles Cl2 to moles MgCl2.
    The answers to moles MgCl2 will be different; obviously, one of them is wrong. In limiting reagent problems, the correct answer is ALWAYS the smaller one and the reactant producing that value is the limiting reagent.

    Now use the smaller value and convert moles MgCl2 to grams. g = moles x molar mass.
    Post your work if you get stuck.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question