when copper metal is added to silver nitrate in solution, silver metal and copper (II) nitrate are produced. what mass of silver is produced from 100.g Cu?
339gAg
2Ag(NO3) + Cu>>Cu(NO3)2 + 2Ag
a. how much silver nitrate was there?
b. assuming the reaction goes to completion, ie, there is enough silver nitrate, then you get 2 moles siver for each mole of Cu.
moles Cu=100/atomicmassCu
moles Ag=2* above
grams Ag= above*atomicmassAg
To determine the mass of silver produced, we need to use the balanced chemical equation for the reaction:
Cu + 2AgNO3 → 2Ag + Cu(NO3)2
From the equation, we can see that 1 mole of copper will produce 2 moles of silver.
First, we need to calculate the number of moles of copper:
molar mass of Cu = 63.55 g/mol
moles of Cu = mass of Cu / molar mass of Cu
moles of Cu = 100 g / 63.55 g/mol
moles of Cu ≈ 1.573 mol
According to the balanced equation, 1 mole of copper produces 2 moles of silver. So, the number of moles of silver produced will be:
moles of Ag = 2 x moles of Cu
moles of Ag = 2 x 1.573 mol
moles of Ag ≈ 3.146 mol
Finally, we can calculate the mass of silver produced:
molar mass of Ag = 107.87 g/mol
mass of Ag = moles of Ag x molar mass of Ag
mass of Ag = 3.146 mol x 107.87 g/mol
mass of Ag ≈ 339.21 g
Therefore, approximately 339.21 grams of silver will be produced from 100 grams of copper.
To determine the mass of silver produced from the reaction between copper metal (Cu) and silver nitrate (AgNO3), we need to use the concept of stoichiometry.
Stoichiometry is the calculation of quantities in chemical reactions based on the balanced equation. In this case, the balanced equation for the reaction is:
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
From the equation, we can see that 1 mole of copper (Cu) reacts with 2 moles of silver nitrate (AgNO3) to produce 2 moles of silver (Ag).
To solve the problem, we can follow these steps:
Step 1: Convert mass of copper (Cu) to moles.
Using the molar mass of copper (Cu) (63.55 g/mol), we can calculate the number of moles of copper:
Moles of Cu = Mass of Cu / Molar mass of Cu
Moles of Cu = 100 g / 63.55 g/mol
Step 2: Use the stoichiometric ratio to find the moles of silver (Ag).
From the balanced equation, we know that for every 1 mole of copper (Cu), 2 moles of silver (Ag) are produced. Therefore, the number of moles of silver can be calculated as:
Moles of Ag = Moles of Cu × (2 moles of Ag / 1 mole of Cu)
Step 3: Convert moles of silver (Ag) to mass.
Using the molar mass of silver (Ag) (107.87 g/mol), we can calculate the mass of silver produced:
Mass of Ag = Moles of Ag × Molar mass of Ag
Now, let's calculate the mass of silver produced:
Moles of Cu = 100 g / 63.55 g/mol = 1.573 mol (approximately)
Moles of Ag = 1.573 mol × (2 mol of Ag / 1 mol of Cu) = 3.147 mol (approximately)
Mass of Ag = 3.147 mol × 107.87 g/mol ≈ 339.10 g
Therefore, approximately 339.10 grams of silver are produced from 100 grams of copper.