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Chapter 1: Problem 31

Which of the following is in the correct order according to metal reactivity series? (a) \(\mathrm{Al}<\mathrm{Fe}<\mathrm{Na}<\mathrm{Ca}\) (b) \(\mathrm{Fe}<\mathrm{Ca}<\mathrm{Al}<\mathrm{Na}\) (c) \(\mathrm{Fe}<\mathrm{Al}<\mathrm{Ca}<\mathrm{Na}\) (d) \(\mathrm{Na}<\mathrm{Ca}<\mathrm{Al}<\mathrm{Fe}\)

Short Answer

Expert verified
Answer: The correct order is Na < Ca < Al < Fe.

Step by step solution

01

Find the Reactivity Series

The general Metal Reactivity Series is as follows: \(\mathrm{K, Na, Ca, Mg, Al, (Zn, Fe, Pb), H, (Cu, Hg, Ag), Au} \dots\) From most reactive to least reactive.
02

Extract the Metals From the Given Options

The metals involved in the given options are \(\mathrm{Al}\), \(\mathrm{Fe}\), \(\mathrm{Na}\), and \(\mathrm{Ca}\). According to the Reactivity Series, the order of these metals is as follows: \(\mathrm{Na}\), \(\mathrm{Ca}\), \(\mathrm{Al}\), \(\mathrm{Fe}\)
03

Compare With the Given Options

Comparing the correct order of metal reactivity with the given options: (a) \(\mathrm{Al}<\mathrm{Fe}<\mathrm{Na}<\mathrm{Ca}\) (b) \(\mathrm{Fe}<\mathrm{Ca}<\mathrm{Al}<\mathrm{Na}\) (c) \(\mathrm{Fe}<\mathrm{Al}<\mathrm{Ca}<\mathrm{Na}\) (d) \(\mathrm{Na}<\mathrm{Ca}<\mathrm{Al}<\mathrm{Fe}\) Option (d) matches the correct order of metal reactivity that we found in Step 2.
04

Conclusion

The correct order according to the Metal Reactivity Series is given by option (d) \(\mathrm{Na}<\mathrm{Ca}<\mathrm{Al}<\mathrm{Fe}\).

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Most popular questions from this chapter

Empirical formula of a compound is \(\mathrm{A}_{2} \mathrm{~B}_{4} .\) If its empirical formula weight is half of its vapour density, determine the molecular formula of the compound. (a) \(\mathrm{A}_{4} \mathrm{~B}_{8}\) (b) \(\mathrm{A}_{8} \mathrm{~B}_{16}\) (c) \(\mathrm{A}_{2} \mathrm{~B}_{4}\) (d) \(\mathrm{A}_{3} \mathrm{~B}_{6}\)

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