Answer: Option (6) is the correct answer.
Explanation:
Lattice energy is described as the energy released when formation of 1 mole of an ionic compound occurs due to the combination of its constituent ions.
Also, lattice energy is inversely proportional to the distance between the cation and anion. And, when we move down a group then there occurs an increase in the atomic radii of the atoms.
This means that smaller is the ionic distance between the cation and anion, more will be the lattice energy between the atoms.
Therefore, order from weakest to strongest lattice energy (most positive to most negative) for the given compounds is as follows.
barium chloride < strontium chloride < calcium chloride < magnesium chloride
Explanation:
Below is an attachment containing the solution.
Answer:
The two constitutionally isomeric compounds that result from the reaction between sodium nitrite (NaNO2) and 2−Iodooctane are the following:
The actual yield is 125.6
Balanced equation: 2Na + Cl2–>2NaCl
To find the theoretical yield :
57.50gNa ( 1mol/23gNa ) (2mol NaCl/2molNa)(58.44g NaCl / 1molNaCl) = 146.1g NaCl
Theoretical yield : 146.1g
Percentage yield: 86% or 0.86
(0.86)(146.1) =125.6
