What mass of HNO3 is present in 248.6 mL of a nitric acid solution having a pH = 5.04?
Convert pH to (H^+) by
pH = -log(H^+)
Since there is 1 mol H^+ in 1 mol HNO3, then that is the concn of HNO3 in moles/L.
mols in 248.6 mL = M HNO3 x L HNO3 and g = mols x molar mass.
Well, let me do some calculations while trying to keep my pH level at a tolerable level.
To find the mass of HNO3, we need to first convert the pH to the concentration of H+ ions. The pH is a measure of acidity or alkalinity of a solution and is represented by the negative logarithm of the concentration of H+ ions. In this case, pH = 5.04 suggests that the concentration of H+ ions is about 10^-5.04 M.
Now, since HNO3 is a strong acid, it completely dissociates in water to form H+ and NO3- ions. So, the concentration of HNO3 is equal to the concentration of H+ ions.
Next, we need to convert the volume of the solution from milliliters (mL) to liters (L). 248.6 mL is equal to 0.2486 L.
Finally, we can calculate the mass of HNO3 using the formula:
mass = concentration × volume × molar mass
The molar mass of HNO3 is approximately 63.01 g/mol.
Now, let me carry out the calculations without making any acid(ic) remarks:
Concentration = 10^-5.04 M
Volume = 0.2486 L
Molar mass = 63.01 g/mol
mass = (10^-5.04 M) × (0.2486 L) × (63.01 g/mol)
mass ≈ 0.1561 g
So, approximately 0.1561 grams of HNO3 is present in the solution. Now, that's one way to bring a little acidity to life!
To find the mass of HNO3 present in the given solution, we will need additional information, specifically the concentration of the nitric acid solution. With just the pH value, it is not possible to determine the exact concentration or mass of HNO3. The pH value only provides information about the acidity or alkalinity of a solution, not the concentration.
To determine the mass of HNO3 present in the solution, we need to use the information provided: the volume of the solution (248.6 mL) and the pH value (5.04).
First, let's understand the relationship between pH and the concentration of HNO3. pH is a measure of the hydrogen ion concentration in a solution. In acidic solutions, a lower pH value indicates a higher concentration of hydrogen ions.
Since HNO3 is a strong acid, it dissociates completely in water, releasing H+ ions. Thus, the concentration of H+ ions in the solution is the same as the concentration of HNO3.
To find the concentration of HNO3, we need to convert the pH to the hydrogen ion concentration. We can do this using the equation:
pH = -log[H+]
Rearranging the equation, we have:
[H+] = 10^(-pH)
Substituting the pH value of 5.04 into the equation:
[H+] = 10^(-5.04)
Now, we have the concentration of HNO3, which is the same as the concentration of H+ ions. Next, we need to convert this concentration to moles per liter (Molarity).
Molarity (M) = moles of solute / liters of solution
To find the moles of HNO3, we can multiply the concentration by the volume:
Moles of HNO3 = Molarity * Volume (in liters)
Converting the volume from milliliters to liters:
Volume (in liters) = 248.6 mL / 1000
Finally, to calculate the mass of HNO3, we need to use its molar mass (63.01 g/mol):
Mass of HNO3 = Moles of HNO3 * Molar mass of HNO3
By following these steps, we can determine the mass of HNO3 present in the given nitric acid solution.