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Phosphoric acid has the formula H3PO4 so if you add up these numbers from the Periodic Table you find the Molar mass of phosphoric acid is 98 (1+1+1+31+16+16+16+16). this is the mass (in grams) of one mol of phosphoric acid (or 6.02 x 10^23 atoms of phosphoric acid)
So times this number by 0.4 to find the mass of 0.4mol of phosphoric acid=39.2 grams
What else can I help you with?
How do you calculate concentration of phosphoric acid?
To calculate the concentration of phosphoric acid, you need to know the volume of the solution containing phosphoric acid and the amount of phosphoric acid in moles present in the solution. By dividing the amount of phosphoric acid in moles by the volume of the solution in liters, you can calculate the concentration in units of moles per liter (Molarity).
How many moles of hydrogen atoms are in one mole of phosphoric acid?
One mole of phosphoric acid (H3PO4) contains three moles of hydrogen atoms. This is because there are three hydrogen atoms in each molecule of phosphoric acid. Each mole of phosphoric acid contributes three moles of hydrogen atoms to the overall chemical formula.
What is the concentration of a phosphoric acid solution of a 25.00 mL sample if the acid requires 42.24 mL of 0.135 M NaOH for neutralization?
The acid and base react in a 1:1 ratio, so moles of acid = moles of base. Moles of NaOH used = 0.135 mol/L * 0.04224 L = 0.0057 moles. This means there are 0.0057 moles of phosphoric acid in 25.00 mL. Concentration = moles/volume = 0.0057 moles / 0.025 L = 0.228 M.
What is the mole fraction of phosphoric acid formula weight 98.00 in 175 grams of water formula weight 18.0116?
First, calculate the moles of water: 175g / 18.0116 g/mol = 9.721 moles. The total moles in the solution is the sum of water and phosphoric acid (H3PO4) moles. Next, calculate the mole fraction of H3PO4: moles of H3PO4 / total moles in the solution. This will give you the mole fraction of phosphoric acid in the solution.
Is poly phosphoric acid different from phosphoric acid?
I don't think so.poly phosphoric acid and phosphoric acid have same moleculer structure.http://harvestchem.iblogger.org
What is the acid name H3PO4?
phosphoric acid
What is the reaction of phosphoric acid with nitric acid?
phosphoric acid
What is meaning of 0.6m of phosphoric acid?
this means 0.6gm of phosphoric acid in 1000gm of water --------------------------------------- (the previous answer describes a mass percent) It means a 0.6 molal phosphoric acid (i.e. 0.6 mol hydrogen phosphate in 1 kg of water, which is roughly equivalent to 0.6 M phosphoric acid), though molality (mol/kg) is rarely used to denote concentration of acids. More common units are molarity M (mol/L) or normality n (mol/L of hydrogen ion generated).
What is the difference between ortho-phosphoric acid and phosphoric acid?
Ortho-phosphoric acid is a specific form of phosphoric acid, where the phosphorus atom is bonded to three hydroxyl groups. Phosphoric acid, on the other hand, is a more general term that can refer to any acid containing phosphorus, including ortho-phosphoric acid, as well as pyrophosphoric acid and metaphosphoric acid.
What volume of 0.200 molarity phosphoric acid will react completely with 50ml of 0.100 molarity sodium hydroxide?
Phosphoric Acid dissociates to give off 3H+ ions, meaning that one mole of Phosphoric acid reacts with three mols of sodium hydroxide. Using the equation n = c x v n = 0.1 x 0.05 =0.005 mols of OH ions in the solution therefore there are 0.005/3 = 0.00167 So the volume of phosphoric acid - v = n/c v = 0.00167/0.2 v = 0.00835 l = 8.4ml of Phosphoric Acid reacts completely with Sodium hydroxide
What volume of 6 m sodium hydroxide is required to neutralize 50.0 ml of 2.5 m phosphoric acid?
To determine the volume of 6 M sodium hydroxide needed to neutralize 50.0 mL of 2.5 M phosphoric acid, you must first calculate the number of moles of phosphoric acid present (mol = M x L). You then use the balanced chemical equation to determine the mole ratio between phosphoric acid and sodium hydroxide (in this case, it's 2 moles of NaOH for each 1 mole of H3PO4). Finally, you calculate the volume of 6 M sodium hydroxide needed using the molarity and moles obtained.
How can I make a 9N Phosphoric Acid solution?
To make a 9N (normal) Phosphoric Acid solution, you will need to know the concentration of your Phosphoric Acid. The formula to calculate the volume of Phosphoric Acid required is: Volume (in liters) = (Desired Normality * Equivalent Weight of Phosphoric Acid * Volume of Solution) / Concentration of Phosphoric Acid.
