Preview - Stoichiometry - Creating A Fizzy Drink Part 1

Review

In the previous lesson, you observed a chemical reaction with magnesium (Mg) and hydrochloric acid (HCl) that produced magnesium chloride (MgCl2) and hydrogen gas (H2). This chemical reaction is represented as a chemical equation below.

Mg + HCl  ----->   MgCl2    +   H2 
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Reactants   Products
 
If the correct proportions of magnesium and hydrochloric acid were utilized in the chemical reaction, all of the starting magnesium was used, and that with the hydrochloric acid yielded the maximum amount of hydrogen gas possible. If the wrong ratio of magnesium to hydrochloric acid was used, then some magnesium remained after the reaction was complete and the maximum amount of hydrogen gas was NOT produced. The chemical equation as represented above is a 1:1 ratio of Mg to HCl which did NOT use all of the magnesium and produce the maximum amount of hydrogen gas.

Questions

Please answer the questions below.

1. What was the correct ratio of Mg to HCl that used all of the magnesium and produced the maximum amount of hydrogen gas possible?

A) A 2:1 ratio of magnesium to hydrochloric acid
B) A 1:2 ratio of magnesium to hydrochloric acid
C) A 2:2 ratio of magnesium to hydrochloric acid
D) A 1:3 ratio of magnesium to hydrochloric acid

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.