Need help on chemistry, solution problems.

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In summary, the question asks how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present in a salt mixture after a reaction between 50 mL of a 0.05M solution of sodium carbonate and 80 mL of a 5% by mass solution of silver nitrate. The balanced chemical equation is Na2CO3 + 2AgNO3 = Ag2CO3 + 2NaNO3, and the molar masses of each compound are provided. It is assumed that the 5% concentration refers to mass by mass. After finding the moles of sodium carbonate to be 0.0025 mol, the calculations to determine the grams of each compound present are not provided.
  • #1
Tensaiga
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Hello, the question i have here is:

Fifty millilitres of a 0.05M solution of Sodium Carbonate is added to 80mL of a 5% by mass solution containing Siliver Nitrate. The product of the reaction are solid Siliver Carbonate and a solution is evapourated to dryness, leaving a mixture of salts. How many grams of the salts, Sodium Carbonate, Siliver Nitrate, Siliver Carbonate, and Sodium Nitrate are present in the salt mixture?

Note: Indicate any assumptions necessary in order to perform the calculations.

The balanced chemical equation is Na2CO3 + 2AgNO3 = Ag2CO3 + 2NaNO3

Na2CO3 = 106g/mol
AgNO3 = 169.87g/mol
Ag2CO3 = 275.74g/mol
NaNO3 = 85.00g/mol

i found out the moles of Sodium Carbonate to be 0.0025 mol.

Then I'm stuck, thanks everyone.
 
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  • #2
First of all, is it 5% mass by mass? or mass by volume?
 
  • #3


Hello! It seems like you have already made some progress in your calculations. To continue, we can use the balanced equation and the given information to find the moles of silver nitrate present in the solution. From there, we can use stoichiometry to determine the moles of silver carbonate formed and the moles of sodium nitrate remaining in the solution. We can then use the molar masses of each compound to convert the moles to grams.

Assuming that the reaction goes to completion, we can also assume that all of the silver nitrate is consumed and converted into silver carbonate. Additionally, when the solution is evaporated to dryness, we can assume that all of the water is removed and only the salts remain.

I hope this helps guide you in your calculations. Remember to always double check your work and units to ensure accuracy.
 

FAQ: Need help on chemistry, solution problems.

1. What is a solution in chemistry?

A solution in chemistry is a homogeneous mixture composed of two or more substances. The substance that dissolves in the solution is called the solute, while the substance that dissolves the solute is called the solvent. Solutions can exist in all three states of matter (solid, liquid, gas) and can be separated through various techniques such as evaporation, filtration, or distillation.

2. How do you calculate the concentration of a solution?

The concentration of a solution can be calculated using the formula: concentration (C) = amount of solute (m) / volume of solution (V). The units for concentration can vary depending on the context, but common units include molarity (moles per liter), molality (moles per kilogram), and mass percent (grams per 100 grams).

3. What is the difference between a dilute and concentrated solution?

A dilute solution has a low concentration of solute compared to the amount of solvent, while a concentrated solution has a high concentration of solute. This can also be expressed as a low or high dilution factor, where a dilution factor less than 1 indicates a dilute solution and a dilution factor greater than 1 indicates a concentrated solution.

4. How do you prepare a standard solution?

To prepare a standard solution, you will need to know the desired concentration and volume of the solution. First, measure out the appropriate amount of solute and dissolve it in a known volume of solvent. Then, use a volumetric flask to add more solvent until the solution reaches the desired volume. Finally, mix the solution thoroughly to ensure the solute is evenly distributed.

5. What are the different types of solutions in chemistry?

In chemistry, there are several types of solutions, including solid solutions, liquid solutions, gas solutions, and alloy solutions. Solid solutions involve a solid solute dissolved in a solid solvent, such as salt dissolved in water. Liquid solutions involve a liquid solute dissolved in a liquid solvent, such as ethanol dissolved in water. Gas solutions involve a gas solute dissolved in a gas solvent, such as oxygen dissolved in nitrogen. Alloy solutions involve a solid solute (usually a metal) dissolved in a solid solvent (usually another metal).

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