Chemistry, 10.12.2019 23:31 sidallen05

When a solution of barium nitrate and a solution of copper (ii) sulfate are mixed, a chemical reaction produces solid barium sulfate, which sinks to the bottom, and a solution of copper (ii) nitrate. suppose some barium nitrate is dissolved in 120.00 g of water and 8.15 g of copper (ii) sulfate is dissolved in 75.00 g of water. the solutions are poured together, and a white solid forms. after the solid is filtered off, it is found to have a mass of 10.76 g. the mass of the solution that passed through the filter is 204.44 g. what mass of barium nitrate was used in the reaction?

Answers: 1

Show answers

Answers

Answer from: mir1425

Mass of barium nitrate used in the beginning of the reaction was $\boxed{12.05{\text{ g}}}$ .

Further explanation:

The chemical reaction that contains equal number of atoms of the different elements in the reactant as well as in the product side is known as balanced chemical reaction. The chemical equation is required to be balanced to follow the Law of the conservation of massThe chemical reaction that contains equal number of atoms of the different elements in the reactant as well as in the product side is known as balanced chemical reaction. The chemical equation is required to be balanced to follow the Law of the conservation of mass.

Every chemical reaction occurs in accordance with the law of conservation of mass that states that total mass of the reactant combining must be equal to the products formed. Hence every balanced chemical equation must obey the law of conservation of mass and energy.

The balanced chemical equation for reaction between barium nitrate and copper sulfate is given as follows:

${\text{BaN}}{{\text{O}}_3}\left( l \right) + {\text{CuS}}{{\text{O}}_4}\left( l \right) \to {\text{BaS}}{{\text{O}}_4}\left( s \right) + {\text{CuN}}{{\text{O}}_3}\left( l \right)$

Since the mass of the solution that passed through the filter was $215.20{\text{ g}}$ , and the mass of solid ${\text{BaS}}{{\text{O}}_4}$ precipitate separated was ${\text{10}}{\text{.76 g}}$ . Hence total mass of products is the sum of these two reactants.

$\begin{aligned}{\left( {{\text{Total}}\;{\text{Mass}}} \right)_{{\text{products}}}} &= {\text{10}}{\text{.76 g}} + 215.20{\text{ g}}\\&= 215.20{\text{ g}}\\\end{aligned}$

Assume the mass of unknown barium nitrate is . Mass of reactants involves mass of barium nitrate, water used for dissolving barium nitrate, mass of copper sulfate and water used for dissolving copper sulfate. The total mass of reactants is calculated as follows:

$\begin{aligned}{\left( {{\text{Total Mass}}} \right)_{{\text{reactants}}}}&= x + {\text{8}}{\text{.15 g}} + {\text{120}}{\text{.0 g}} + {\text{75}}{\text{.00 g}}\\&= x + 203.15\;{\text{g}}\\\end{aligned}$

The law of conservation of mass holds true for this equation as well as represented below:

${\left( {{\text{Total Mass}}} \right)_{{\text{reactants}}}} = {\left( {{\text{Total}}\;{\text{Mass}}} \right)_{{\text{products}}}}$ …… (1)

Substitute $215.20{\text{ g}}$ for ${\left( {{\text{Total}}\;{\text{Mass}}} \right)_{{\text{products}}}}$ and $x + 203.15\;{\text{g}}$ for ${\left( {{\text{Total Mass}}} \right)_{{\text{reactants}}}}$ in equation

(1).

$x + {\text{120}}{\text{.0 g}} + {\text{75}}{\text{.00 g}} + {\text{8}}{\text{.15 g}} = 215.20{\text{ g}}$

Simplify to obtain the value of mass of barium nitrate $\left( x \right)$ .

$\begin{aligned}x&=215.20{\text{ g}}- {\text{120}}{\text{.0 g}} - {\text{75}}{\text{.00 g}} - {\text{8}}{\text{.15 g}}\\&= 215.20{\text{ g}} - {\text{203}}{\text{.15 g}}\\&= 12.05{\text{ g}}\\\end{aligned}$

Learn more:

1. Effectiveness of detergent:

2. The main purpose of conducting experiments:

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical equations and reactions.

Keywords: Barium nitrate, precipitation, precipitate, law of conservation of mass, mass, products, reactants and 12.05 g.

Answer from: Quest

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

hope this

Answer from: Quest

i believe that it is a exoplanet

Another question on Chemistry

Chemistry, 21.06.2019 22:30

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

Answers: 1

Answer

Chemistry, 22.06.2019 03:50

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Answers: 1

Answer

Chemistry, 22.06.2019 04:30

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Answers: 1

Answer

Chemistry, 22.06.2019 09:00

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Answers: 3

Answer

You know the right answer?

When a solution of barium nitrate and a solution of copper (ii) sulfate are mixed, a chemical reacti...