Calculate the percent yield for a reaction if the predicted or theoretical yield is 25.31 g and the actual yield is 22.06 g.

                       %age Yield =  87.16 %

Explanation:

                    Percentage yield is the ratio of actual yield to theoretical yield. The actual yield the amount of product obtained after the experiment and the theoretical yield is the amount of ideal product obtained on paper calculations. The actual yield is almost always less than the theoretical yield due to chemical reaction problems, or handling problems.

Given Data:

                 Theoretical Yield  =  25.31 g

                  Actual Yield  =  22.06 g

                  %age Yield  =  ?

Formula Used:

                   %age Yield  =  (Actual Yield ÷ Theoretical Yield) × 100

Putting Values,

                   %age Yield  =  (22.06 g ÷ 25.31 g) × 100

                   %age Yield =  87.16 %

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the maximum mass of nh3 is nh3 in grams