What is the [H3O+] in a solution that contains 1.59 g of HNO3 in 0.460 L of solution?
mols HNO3 = grams/molar mass = ?
Then M HNO3 = mols HNO3/L solution = ?
To find the concentration of the hydronium ion ([H3O+]) in the solution, you need to calculate the number of moles of HNO3 in the solution and then determine the concentration using the volume of the solution.
First, calculate the number of moles of HNO3:
1. Use the molar mass of HNO3 to convert the given mass to moles.
- The molar mass of HNO3 is 63.01 g/mol (H = 1.01 g/mol, N = 14.01 g/mol, O = 16.00 g/mol).
- Moles of HNO3 = mass of HNO3 / molar mass of HNO3.
Following that, calculate the moles:
Moles of HNO3 = 1.59 g / 63.01 g/mol.
Next, determine the concentration of the hydronium ion ([H3O+]):
2. Divide the number of moles of HNO3 by the volume of the solution.
- Concentration of [H3O+] = moles of HNO3 / volume of solution.
Plugging in the values:
Concentration of [H3O+] = moles of HNO3 / 0.460 L.