Plz help me with 18 guys tysm!
1 answer:
You might be interested in
Answer:
The effective number of bonds in sulfate ion is 1.5
Explanation:
The number of chemical bonds between two atoms is known as the bond order.
In covalent bonds between two atoms, a single bond has a bond order of one, a double bond has a bond order of two, a triple bond has a bond order of three.
If there are more than two atoms in a molecule, the effective number of bonds can be determined by applying the following steps:
1. Draw the Lewis structure.
2. Count the total number of bonds.
3. Count the number of bond groups between individual atoms.
4. Divide the number of bonds between atoms by the total number of bond groups in the molecule.
For the sulfate ion, the resonance structure is shown in the attachment below. From the structure;
Total number of bonds = (2 × 2) + (2 × 1) = 6
Total number of bond groups = 4
Effective number of bonds = 6/4 = 1.5
Therefore, the effective number of bonds in sulfate ion is 1.5
The concentration of the solution in units of molarity is 0.64 M and the concentration of the solution in terms of g/mL is 0.10976 g/mL.
<h3>What is the concentration of the solution?</h3>The measure of the amount of the solute dissolved in the given amount of the solvent or solution is said to be the concentration of the solution.
It is given by the expression,
Concentration of the solution = mass of the solute/total volume of the solution
Units: g/mL
<h3>What is the concentration of the solution in units of molarity?</h3>The concentration of the solution in units of molarity is given by the expression,
Molarity = (no. of moles of the solute)/(Volume in L)
Units: moles/L
<h3>Calculation:</h3>It is given that the solute is barium hydroxide - Ba(OH)₂
The mass of Ba(OH)₂ = 2.81 g
When in dissolved in water, the total volume of the solution = 25.6 mL
The molar mass of Ba(OH)₂ = 171.34 g/mol
Then,
No. of moles = (mass of Ba(OH)₂)/(molar mass of Ba(OH)₂)
i.e.,
No. of moles = = 0.0164 mole
Concentration = mass of the solute/total volume
I.e., C = = 0.10976 g/mL
Then the concentration of the solution in units of molarity is,
Molarity = (no. of moles)/(Volume of the solution in L)
⇒ Molarity = = 0.64 M
Therefore, the concentration of the solution in units of molarity is 0.64 M.
Learn more about molarity here:
#SPJ4