Which of these stores chemical energy?
2 answers:
You might be interested in
In order of increasing percent water content:CoCl₂.6H₂O, Ba(OH)₂.8H₂O, MgSO₄.7H₂O
<h3>Further explanation</h3>CoCl₂.6H₂O.MW=237.90 g/mol
6H₂O MW = 6.18=108 g/mol
MgSO₄.7H₂O.MW=246.48 g/mol
MW 7H₂O = 7.18=126 g/mol
Ba(OH)₂.8H₂O MW=315.48 g/mol
MW 8H₂O = 8.18=144 g/mol
Answer : The equilibrium concentration of in the trial solution is
Explanation :
First we have to calculate the initial moles of and
.
and,
The given balanced chemical reaction is,
Since 1 mole of reacts with 1 mole of
to give 1 mole of
The limiting reagent is,
So, the number of moles of = 0.0020 mmole
Now we have to calculate the concentration of .
Using Beer-Lambert's law :
where,
A = absorbance of solution
C = concentration of solution
l = path length
= molar absorptivity coefficient
and l are same for stock solution and dilute solution. So,
For trial solution:
The equilibrium concentration of is,
= 0.00050 M
Now calculate the .
Now calculate the concentration of .
Therefore, the equilibrium concentration of in the trial solution is