Chemistry, 18.11.2019 19:31 puchie1225

A15.0 ml sample of a 1.92 m potassium sulfate solution is mixed with 14.9 ml of a 0.860 m barium nitrate solution and this precipitation reaction occurs: k2so4(aq) ba(no3)2(aq)→baso4(s) 2kno3(aq) the solid baso4 is collected, dried, and found to have a mass of 2.46 g . determine the limiting reactant, the theoretical yield, and the percent yield. part a determine the limiting reactant. express your answer as a chemical formula.

Answers: 2

Show answers

Answers

The limiting reagent is barium nitrate, theoretical yield of barium sulfate is 3.03 g and percent yield of barium sulfate is 81.2 %

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$ .....(1)

For potassium sulfate:

Molarity of potassium sulfate = 1.92 M

Volume of solution = 15.0 mL = 0.015 L (Conversion factor: 1 L = 1000 mL)

Putting values in equation 1, we get:

$1.92M=\frac{\text{Moles of potassium sulfate}}{0.015L}\\\\\text{Moles of potassium sulfate}=(1.92mol/L\times 0.015L)=0.029mol$

For barium nitrate:

Molarity of barium nitrate = 0.860 M

Volume of solution = 14.9 mL = 0.0149 L

Putting values in equation 1, we get:

$0.860M=\frac{\text{Moles of barium nitrate}}{0.0149L}\\\\\text{Moles of barium nitrate}=(0.860mol/L\times 0.0149L)=0.013mol$

For the given chemical reaction:

$K_2SO_4(aq.)+Ba(NO_3)_2(aq.)\rightarrow BaSO_4(s)+2KNO_3(aq.)$

By Stoichiometry of the reaction:

1 mole of barium nitrate reacts with 1 mole of potassium sulfate

So, 0.013 moles of barium nitrate will react with = $\frac{1}{1}\times 0.013=0.013mol$ of potassium sulfate.

As, amount of potassium sulfate is more than the required amount. So, it is considered as an excess reagent.

Thus, barium nitrate is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of barium nitrate produces 1 mole of barium sulfate

So, 0.013 moles of barium nitrate will produce = $\frac{1}{1}\times 0.013=0.013mol$ of barium sulfate.

To calculate the mass of barium sulfate, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of barium sulfate = 233.4 g/mol

Moles of barium sulfate = 0.013 moles

Putting values in equation 1, we get:

$0.013mol=\frac{\text{Mass of barium sulfate}}{233.4g/mol}\\\\\text{Mass of barium sulfate}=(0.013mol\times 233.4g/mol)=3.03g$

To calculate the percentage yield of barium sulfate, we use the equation:

$\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100$

Experimental yield of barium sulfate = 2.46 g

Theoretical yield of barium sulfate = 3.03 g

Putting values in above equation, we get:

$\%\text{ yield of barium sulfate}=\frac{2.46g}{3.03g}\times 100\\\\\% \text{yield of barium sulfate}=81.2\%$

Hence, the limiting reagent is barium nitrate, theoretical yield of barium sulfate is 3.03 g and percent yield of barium sulfate is 81.2 %

Answer from: Quest

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

Answer from: Quest

може ли да зареждате повече информация, моля

Another question on Chemistry

Chemistry, 20.06.2019 18:04

Two liquids are shaken together in a test tube to produce a mixture that quickly separates into two layers. which of the following best describes the behavior of the above pair of substances? soluble insoluble miscible immiscible

Answers: 1

Answer

Chemistry, 22.06.2019 00:00

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Answers: 1

Answer

Chemistry, 22.06.2019 09:00

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Answers: 2

Answer

Chemistry, 22.06.2019 12:00

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Answers: 3

Answer

You know the right answer?

A15.0 ml sample of a 1.92 m potassium sulfate solution is mixed with 14.9 ml of a 0.860 m barium nit...

Questions