Measurement error and rounding error are the main reasons. Irregularity in shape may also be a factor.
The actual amount of product formed in a reaction can be determined by calculating the yield, which is the percentage of the theoretical maximum amount of product that is actually obtained in the laboratory. Factors such as reaction conditions, purity of reactants, and side reactions can affect the yield of a reaction. The yield can be calculated by dividing the actual amount of product obtained by the theoretical maximum amount and multiplying by 100.
The percent yield of iron in a chemical reaction refers to the efficiency of the reaction in producing iron compared to the theoretical amount that could be produced based on stoichiometry. It is calculated using the formula: (actual yield / theoretical yield) × 100%. The specific percent yield can vary depending on the reaction conditions and the purity of the reactants. To determine the exact percent yield, you would need the actual yield obtained from an experiment and the theoretical yield calculated from the balanced chemical equation.
The maximum amount of product that can be obtained under ideal conditions is known as the theoretical yield. This value is calculated based on stoichiometry and assumes that all reactants are completely converted into products without any losses. Achieving the theoretical yield is rare in practical situations and is often used as a benchmark for evaluating the efficiency of a reaction.
Percentage yield is given as:-%yield = (mass of product obtained experimentally/theoretical yield)x100where the theoretical yield is the maximum mass which could possibly be obtained assuming 100% stoichiometry.So, say as an example if you start with 71g of Cl2 then:-mol = mass/Mr Mr of Cl2 = 71mol = 71/71mol = 1 of Cl2This is the limiting reagent, assuming we have at least 46g of sodium, thus we double this number as the reaction is 1:21 mole Cl2---->2moles NaClagain we use:-mole = mass/Mr Mr of NaCl = 58.52 x Mr = mass2 x 58.5 = massmaximum mass of NaCl possible = 117gIf the reaction is carried out and we achieve 100g of NaCl then:-%yield = (100/117) x 100= 85.5%
It is a Theoretical Yield
Theoretical results obtained give an approximate range of the experimental results. This indicates the issues that occur before implementing it experimentally.
Theoretical= calculated
The theoretical yield is the amount of product that we predict will be obtained, calculated from the eqquation. The actual yield is the amount of product that is actually obtained at the end of the procedure.
Actual
the amount of product obtained over the amount possible multiplied by 100
Experimental probability is obtained by repeatedly carrying out an experiment. It is the ratio of the number of favourable outcomes and the total number of experiments. Theoretical probability is calculated from a model of the experiment using the laws of physics or nature (or whatever).
%yield = actual/theoretical x 100 = 12.01/23.54 x 100 = 51.02 %
The percentage yield of p-bromoaniline can be calculated by dividing the actual yield by the theoretical yield and multiplying by 100. The actual yield is the amount of p-bromoaniline obtained from the reaction, while the theoretical yield is the maximum amount that can be produced based on the reaction stoichiometry.
The actual amount of product formed in a reaction can be determined by calculating the yield, which is the percentage of the theoretical maximum amount of product that is actually obtained in the laboratory. Factors such as reaction conditions, purity of reactants, and side reactions can affect the yield of a reaction. The yield can be calculated by dividing the actual amount of product obtained by the theoretical maximum amount and multiplying by 100.
A compound of copernicium was not obtained experimentally up today; only predictions exist.
The measured of the amount of product obtained from a chemical reaction is called the yield. The yield can be further converted into a percent yield, which is the ratio of the actual yield of the experiment to the theoretical yield multiplied by 100.
The percent yield of iron in a chemical reaction refers to the efficiency of the reaction in producing iron compared to the theoretical amount that could be produced based on stoichiometry. It is calculated using the formula: (actual yield / theoretical yield) × 100%. The specific percent yield can vary depending on the reaction conditions and the purity of the reactants. To determine the exact percent yield, you would need the actual yield obtained from an experiment and the theoretical yield calculated from the balanced chemical equation.