Chapter 16.2, Problem 13SSC

Interpretation Introduction

Interpretation:

The reason of faster reaction of magnesium with than iron needs to be explained.

Concept introduction:

Activity series of metals is the list of metals arranged according to their reactivity. The highly reactive metals are placed at the top of the list and the least reactive metals are placed at the bottom. Potassium is highest reactive metal and gold is the least reactive metal.

Answer to Problem 13SSC

Reactivity of magnesium is more than iron. So, it undergoes reaction withfaster.

Explanation of Solution

The reaction rate depends upon the reactivity. Highly reactive metals undergo reaction faster than the least reactive metals. Magnesium and iron both are metals. Magnesium is placed after potassium in the activity series and the iron is placed lower than magnesium. So, magnesium is more reactive than iron and thus, it undergoes reaction with at faster rate than iron.

Conclusion

Rate of reaction depends upon reactivity of the substances.