1.30 calculate percentage yield
It is not always possible to get the calculated amount of product in a reaction
The percentage yield can be calculated:
The actual yield is the mass of the product made when the reaction is carried our for real.
The theoretical yield is the maximum mass of the product of the reactants.
To calculate theoretical yield:
1. Use molar mass of reactant to convert grams of reactant to moles of reactant
2. Use the mole ratio between reactant and product to convert moles reactant to moles product
3. Use the molar mass of the product to convert moles product to grams of product
A 100% yield means it all reacted and no product has been lost
Loss may occur in:
Not all reactants react to make the product
The percentage yield can be calculated:
The theoretical yield is the maximum mass of the product of the reactants.
To calculate theoretical yield:
1. Use molar mass of reactant to convert grams of reactant to moles of reactant
2. Use the mole ratio between reactant and product to convert moles reactant to moles product
3. Use the molar mass of the product to convert moles product to grams of product
A 100% yield means it all reacted and no product has been lost
Loss may occur in:
- Filtering
- Evaporating
- Transferring liquids
Not all reactants react to make the product
Comments
Post a Comment