Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 5.0 g of aluminum. ________ Al(s)+ ________ I₂(s)→ ________ Al₂I₆(s)

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction is:

2Al(s) + 3I2(s) → 2AlI3(s)

From the equation, we can see that 3 moles of iodine react with 2 moles of aluminum. Therefore, 1 mole of iodine reacts with (2/3) mole of aluminum.

First, we need to convert the given mass of aluminum to moles:

m Al = 5.0 g
M Al = 26.98 g/mol
n Al = m Al / M Al = 0.185 mol

So, 0.185 mol of aluminum reacts with (3/2) × 0.185 = 0.278 mol of iodine.

Therefore, the answer is B) 0.278 mol.

Balance the Chemical Equation Given Below,and Determine the Number of Moles