To learn more about the genetic material of plant and animal cells, where would a person look?
1 answer:
You might be interested in
Taking into account definition of percent yield, the percent yield for the reaction is 100%.
<h3>Reaction stoichiometry</h3>In first place, the balanced reaction is:
2 FeBr₃ + 3 Na₂S → Fе₂S₃ + 6 NaBr
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
- FeBr₃: 2 moles
- Na₂S; 3 moles
- Fе₂S₃: 1 mole
- NaBr: 6 moles
The following rule of three can be applied: if by reaction stoichiometry 2 moles of FeBr₃ form 6 moles of NaBr, 2.36 moles of FeBr₃ form how many moles of NaBr?
moles of NaBr= 7.08 moles
Then, 7.08 moles of NaBr can be produced from 2.36 moles of FeBr₃.
<h3>Percent yield</h3>The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.
The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:
where the theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.
<h3>Percent yield for the reaction in this case</h3>In this case, being the molar mass of NaBr 102.9 g/mole, you know:
- actual yield= 7.08 moles× 102.9 g/mole= 728.532 grams
- theorical yield= 7.08 moles× 102.9 g/mole= 728.532 grams
Replacing in the definition of percent yields:
Solving:
<u><em>percent yield= 100%</em></u>
Finally, the percent yield for the reaction is 100%.
Learn more about
the reaction stoichiometry:
percent yield:
#SPJ1
Explanation:
It is known that molecular formula of potassium dichromate is . As potassium has an oxidation state of +1 and an oxygen atom has an oxidation state of -2.
Let the oxidation state of chromium is x. Therefore, calculate the oxidation state of chromium as follows.
= 0 (as the molecule is neutral)
= 0
2 + 2x - 14 = 0
x = +6
Thus, we can conclude that the oxidation state of the chromium in the potassium dichromate molecule is +6.