10g of silver nitrate solution is added to 10g sodium chloride solution? what change in mass do you except after the reaction and why?
do you expect after the reaction?
The law of conservation of mass states that if you started with 20grams, you end with 20 grams.
To determine the change in mass after the reaction between silver nitrate (AgNO3) and sodium chloride (NaCl), we need to understand the reaction that takes place and calculate the mass of the products formed.
The reaction between silver nitrate and sodium chloride is a double displacement reaction, also known as a precipitation reaction. It can be represented by the equation:
AgNO3 + NaCl → AgCl + NaNO3
In this reaction, silver chloride (AgCl) and sodium nitrate (NaNO3) are the products formed.
To calculate the mass of the products, we need to find the limiting reactant. The limiting reactant is the one that is completely consumed and determines the maximum amount of product that can be formed. To determine this, we compare the number of moles of each reactant.
The molar mass of AgNO3 is 169.87 g/mol, and the molar mass of NaCl is 58.44 g/mol.
First, we need to calculate the number of moles of AgNO3 and NaCl in the given masses:
Moles of AgNO3 = 10g / 169.87 g/mol
Moles of NaCl = 10g / 58.44 g/mol
Now, we compare the ratios of AgNO3 to NaCl:
AgNO3:NaCl = Moles of AgNO3 / Moles of NaCl
If the ratio of AgNO3 to NaCl is 1:1, it means both reactants will be completely consumed. However, if the ratio is not 1:1, the reactant with the lesser number of moles is the limiting reactant.
Once we determine the limiting reactant, we can calculate the mass of the product formed. In this case, both reactants have the same number of moles, so there is no limiting reactant.
To find the mass of the product AgCl formed, we multiply the number of moles of AgNO3 (or NaCl) by the molar mass of AgCl, which is 143.32 g/mol.
Mass of AgCl = Moles of AgNO3 x Molar mass of AgCl
Since there is no limiting reactant and AgNO3 and NaCl react in a 1:1 ratio, both will be completely consumed to form AgCl. Therefore, the mass of AgCl formed will be equal to the mass of the combined reactants, which is 20g (10g AgNO3 + 10g NaCl).
To summarize, we expect a change in mass of 20g after the reaction. The total mass of silver chloride formed will be equal to the initial mass of the reactants due to the complete consumption of both reactants.