Quick Answer: What is the molar mass of the acid assuming it is diprotic?

How do you find the moles of a Diprotic acid?

A diprotic acid is titrated with NaOH solution of known concentration. Molecular weight (or molar mass) is found in g/mole of the diprotic acid. Weighing the original sample of acid will tell you its mass in grams. Moles can be determined from the volume of NaOH titrant needed to reach the first equivalence point.

How do you calculate Diprotic acid titration?

For diprotic acids, titration curves allow you to calculate the Ka1 and Ka2 of the acid. therefore, the pH at the half-‐first equivalence point in a titration equals the pKa1 of the acid. therefore, the pH at the half-‐second equivalence point in a titration equals the pKa2 of the acid.

How do you calculate the molar mass of an acid?

025 gram, but you want to find the molar mass, or the mass for one mole. So, set up another proportion: x/. 025 g = 1 mol/. 00315 mol, and you find that x = 7.94 grams, which is the molar mass of the acid.

How would the calculated value for the molar mass of the Diprotic acid be affected if you double the amount of water used to dissolve the acid?

You used twice the amount of water to dissolve the acid. Adding twice the amount of water to the acid would not alter the molar mass because the volume of DI water added to the acid was not recorded and was not part of the calculations to find the molar mass.

What is an example of a Diprotic acid?

Diprotic acids, such as sulfuric acid (H₂SO₄), carbonic acid (H₂CO₃), hydrogen sulfide (H₂S), chromic acid (H₂CrO₄), and oxalic acid (H₂C₂O₄) have two acidic hydrogen atoms. Triprotic acids, such as phosphoric acid (H₃PO₄) and citric acid (C₆H₈O₇), have three.

How do you identify a Diprotic acid?

A diprotic acid is titrated with NaOH solution of known concentration. Molecular weight (or molar mass) is found in g/mole of the diprotic acid. Weighing the original sample of acid will tell you its mass in grams. Moles can be determined from the volume of NaOH titrant needed to reach the first equivalence point.

Is H2S2O7 a Diprotic acid?

The total number of diprotic acids among the following is: H3PO4,H2SO4,H3PO3,H2CO3, H2S2O7,H3BO3,H3PO2,H2CrO4,H2SO3.

Is H2SO3 a Diprotic acid?

Sulfurous acid ( H2SO3 ) is a diprotic acid with Ka1=1.39×10−2 and Ka2=6.73×10−8.

Is H2CO3 a Diprotic acid?

Carbonic acid, H2CO3, is a diprotic acid for which K1 = 10^-7 and K2 = 10^-11.

What is the unit of molar mass?

What is the titration formula?

Use the titration formula. If the titrant and analyte have a 1:1 mole ratio, the formula is molarity (M) of the acid x volume (V) of the acid = molarity (M) of the base x volume (V) of the base. Multiply the molarity of the acid by the volume of the acid (1.25 x 35).

How do I calculate molar concentration?

Concentration formula: To find the molar concentration of a solution, simply divide the total moles of solute by the total volume of the solution in liters.

How do you find the equivalence point?

The equivalence point is defined as the point where the moles of strong acid added = initial moles of base B in solution. Graphically, the equivalence point is where the curve is most vertical.

What’s the difference between Monoprotic and Diprotic acids?

Polyprotic acid are able to donate more than one proton per acid molecule, in contrast to monoprotic acids that only donate one proton per molecule. A diprotic acid dissociationThe diprotic acid has two associated values of Ka, one for each proton. Likewise, a triprotic system can be envisioned.

What is a Monoprotic acid?

Therefore, a monoprotic acid is an acid that can donate only one proton, while polyprotic acid can donate more than one proton. Similarly, a monoprotic base can only accept one proton, while a polyprotic base can accept more than one proton.