How many equivalents are present in 5.0 moles of Al³⁺?

Question

Quizplus · Accepted Answer

To find the equivalents, we need to first identify the species that can donate or accept electrons in a reaction. In this case, Al, S, and P can all donate or accept electrons.

Al has a valence of 3+, meaning it can donate 3 electrons. Thus, 1 mole of Al can donate 3 equivalents. 
S has a valence of 2-, meaning it can accept 2 electrons. Thus, 1 mole of S can accept 2 equivalents. 
P has a valence of 3- or 5-, depending on the compound it is in. In this case, it is in a compound with Al and S, so it likely has a valence of 3-. Thus, 1 mole of P can accept 3 equivalents.

Using this information, we can calculate the total equivalents present in 5.0 moles of the compound:

- Al: 5.0 moles x 3 Eq/mole = 15 Eq
- S: 5.0 moles x 2 Eq/mole = 10 Eq
- P: 5.0 moles x 3 Eq/mole = 15 Eq

Total equivalents = 15 Eq + 10 Eq + 15 Eq = 40 Eq

Therefore, the correct answer is A) 15 Eq.

How Many Equivalents Are Present in 5