Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 30.0 g of aluminum.
_____ Al(s) + _____ I₂(s) → _____ Al₂I₆(s)

Question

Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 30.0 g of aluminum. _____ Al(s)+ _____ I₂(s)→ _____ Al₂I₆(s)

Quizplus · Accepted Answer

The balanced chemical equation is:

2 Al(s) + 3 I2(s) → 2 AlI3(s)

From the equation, we can see that 3 moles of I2 react with 2 moles of Al. Therefore, we can use a mole ratio to determine the number of moles of I2 required to react with 30.0 g of Al:

30.0 g Al x (1 mol Al/26.98 g) x (3 mol I2/2 mol Al) x (253.8 g I2/1 mol I2) = 1.67 mol I2

Therefore, the correct choice is B.

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