Answer:
are present in solution.
Explanation:
Molarity of the solution = 0.210 M
Volume of the solution = 65.5 ml = 0.0655 L
Moles of aluminum iodide = n
n = 0.013755 moles of aluminum iodide
Each mole of aluminum iodide yields 3 moles of iodide ions:
Thus, 0.013755 moles of aluminum iodide will provide:
moles of iodide ions
The total number of iodide ions in 0.041265 moles:
are present in solution.
Answer: The enthalpy change for the reaction is, 201.9 kJ
Explanation:
Based on Hess’s law of constant heat summation, the energy released or absorbed in a chemical reaction stays constant, regardless of whether the process unfolds in one step or multiple steps.
This principle implies, that chemical equations can be treated analogously to algebraic expressions, allowing addition or subtraction to create the needed equation. Thus, the overall enthalpy change corresponds to the summation of the individual enthalpy changes of the reactions occurring in between.
The balanced equation for appears as follows,
The intermediate balanced reactions are outlined as follows,
(1)
(2)
(3)
(4)
Next, we will multiply the first reaction by 2, reverse the second, and reverse and halve the third and fourth reactions before combining them. This gives us:
(1)
(2)
(3)
(4)
Therefore, the expression for the enthalpy of the reaction is,
Hence, the enthalpy change for this reaction is, 201.9 kJ