Question

In: Chemistry

Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three...

Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.500 M phosphoric acid solution.

pKa1= 2.16 pKa2=7.21 pKa3= 12.32

What's: H3PO4, H2PO4-, HPO4-2, PO4-3, H, OH, and pH

-Thanks!

Solutions

Expert Solution


Related Solutions

Phosphoric Acid, H3PO4(aq) is a triprotic acid, meaning that one molecule of the acid has three...
Phosphoric Acid, H3PO4(aq) is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH and the concentrations(M) of all species in a 0.300 M phosphoric acid solution. pKa1= 2.16 pKa2=7.21 pKa3=12.32 [H3PO4]= [H2PO4-]= [HPO4^2-]= [PO4^3-] [H+]= [OH-]= pH=
Phosphoric acid, H3PO4(aq), is a triprotic acid. Calculate the pH and concentrations of H3O + (aq),...
Phosphoric acid, H3PO4(aq), is a triprotic acid. Calculate the pH and concentrations of H3O + (aq), H3PO4(aq), H2PO4 − (aq), HPO4 2− (aq), PO4 3− (aq), and OH− (aq) in a 0.100-M phosphoric acid solution at 25°C.
Phosphoric acid, H 3 PO 4 ( aq ) , is a triprotic acid, meaning that...
Phosphoric acid, H 3 PO 4 ( aq ) , is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH and the concentrations of all species in a 0.500 M phosphoric acid solution. [ H 3 PO 4 ] = [ H + ] = [ H 2 PO − 4 ] = [ OH − ] = [ HPO 2 − 4 ] = [ PO 3 − 4 ] =
39. Phosphoric acid (H3PO4) is a triprotic weak acid. Calculate the pH, [H3PO4], [H2PO4 -], [HPO4...
39. Phosphoric acid (H3PO4) is a triprotic weak acid. Calculate the pH, [H3PO4], [H2PO4 -], [HPO4 2-], and [PO4 3-] of a 4.5 M H3PO4 aqueous solution. H3PO4 (aq) + H2O (l) ⇌ H3PO4 - (aq) + H3O+ (aq) Ka1 = 7.5 × 10-3 H3PO4 - (aq) + H2O (l) ⇌ HPO4 2- (aq) + H3O+ (aq) Ka2 = 6.2 × 10-8 HPO4 2- (aq) + H2O (l) ⇌ PO4 3- (aq) + H3O+ (aq) Ka3 = 4.2 × 10-13
2. Phosphoric acid (H3PO4) is a triprotic acid with the following pKa values: pKa1 = 2.15...
2. Phosphoric acid (H3PO4) is a triprotic acid with the following pKa values: pKa1 = 2.15 pKa2 = 7.20 pKa3 = 12.35 a). You wish to prepare a 1.000 L of a 0.0450 M phosphate buffer at pH 6.8. Which of the following salts do you use (PICK 2) and what mass of each salt will you add to the mixture? H3PO4 (M.W.= 97.995) KH2PO4 (M.W.=136.086) Na2HPO4 (M.W.=141.959) AlPO4 (M.W.=121.953) 2 b). A concentrated phosphate buffer known as “phosphate buffered...
A 5.00 mL volume of a 0.60 M solution of phosphoric acid, H3PO4(aq), reacts with 45.00...
A 5.00 mL volume of a 0.60 M solution of phosphoric acid, H3PO4(aq), reacts with 45.00 mL of 0.25 M NaOH(aq) according to the reaction below. The temperature of the solution rises from 26.0 °C to 28.0 °C. Assume the volumes of the solutions are additive, the density of the final solution is 1.10 g mL–1 , the heat capacity of the solution is the same as water and the water produced by the reaction does not affect the volume...
Phosphoric acid has three titratable hydrogen ions; the respective equilibria are expressed as follows: H3PO4 -->...
Phosphoric acid has three titratable hydrogen ions; the respective equilibria are expressed as follows: H3PO4 --> /<-- H+ + H2PO41-                                     pK1 = 2.1 H2PO41- -->/<-- H+ + HPO42-                          pK2 = 6.8 HPO42- -->/<-- H+ + PO43-                             pK3 = 12.4 How would you prepare 1L of a 1 M phosphate buffer, pH 7.5? Your available chemicals include solid NaH2PO4, solid Na2HPO4, solid NaOH, and 6 M HCl solution. Indicate how you would prepare this buffer.
Phosphoric acid is a triprotic acid, and the Ka values are given below. Calculate pH, pOH,...
Phosphoric acid is a triprotic acid, and the Ka values are given below. Calculate pH, pOH, [H3PO4], [H2PO4 2- ], [HPO4 - ], and [PO4 3- ] at equilibrium for a 5.00 M phosphoric acid solution. Ka1 = 7.5 x 10-3 Ka2 = 6.2 x 10-8 Ka3 = 4.2 x 10
Phosphoric acid, H3PO4, has some important applications. It can be used to produce fertilizers and it...
Phosphoric acid, H3PO4, has some important applications. It can be used to produce fertilizers and it is present in soft drinks. Phosphoric acid can be made from phosphorus in a two step process: Reaction 1: P4+ 5O2 → P2O10 Reaction 2: P4H10 + 6H2O → 4H3PO4 1. What is the molar mass of phosphoric acid, H3 PO4? Report your answer to 3 significant figures. 2. How many moles of H3PO4 can be produced from one mole of P4? 3. A...
Phosphoric acid is a triprotic acid. Calculate the [PO4^3-] if you start out with 5.00 M...
Phosphoric acid is a triprotic acid. Calculate the [PO4^3-] if you start out with 5.00 M phosphoric acid.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT