376.0 g of phosphoric acid, H3PO4, are dissolved in 2.5×103 g of water, H2O. What is the molality (m) of phosphoric acid?
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376.0 g of phosphoric acid, H3PO4, are dissolved in 2.5×103 g of water, H2O. What is...
a solution of phosphoric acid with a molality of 7.435 A solution of phosphoric acid with a molality of 7.435 m has a density of 1.780 g/mL. What is the concentration of this solution? Give you answer to four significant figures and don't forget your units Answer:
Calculate the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution. (Assume 750 mL of solution.) What is the molarity of the solution? What is the molality? (At 20 ° C, the density of phosphoric acid is 1.1462 g/mL and the density of water is 0.99823 g/mL.)
Phosphoric acid, H3PO4,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→P4O10P4+5O2→P4O10 Reaction 2: P4O10+6H2O→4H3PO4P4O10+6H2O→4H3PO4 What is the molar mass of phosphoric acid, H3PO4?H3PO4? Report your answer to 3 significant figures. g/mol How many moles of H3PO4H3PO4 can be produced from one mole of P4P4 ? Hint: You need to look at both reaction (1) and reaction (2). Your answer should...
How much water is produced when 0.0320 g of phosphoric acid reacts? Choose the answer with the appropriate significant figures and unit. 0.0177 g H200) 0.0320 g H200) 0.0580 g H3PO4(aq) 0.018 g H200) 0.058 g H3PO4(aq) Cu(s) + 2AgNO3(aq) → 2Ag(s) + Cu(NO3)2(aq) Calculate the mass of copper needed to react with 5.7120 g AgNOa(aq). Choose the answers with the appropriate significant figures and unit. Selectl Select )
2. Answer the following questions about phosphoric acid (H3PO4). a. (2 points) What color will a 0.1 M solution of H3PO4 turn blue litmus paper? b. (2 points) What color will a 0.1 M solution of H3PO4 turn red litmus paper? c. (2 points) What color will phenolphthalein be in a 0.1 M solution of H,POA? d. (5 points) Write an equation for the reaction that takes place when phosphoric acid is added to water e. (4 points) What is...
If a 25.0 mL sample of phosphoric acid, H3PO4, is completely neutralized by 137 mL of 0.100 M KOH, what is the molarity of the phosphoric acid? Given: H3PO4 + 3 KOH → 3 H2O + K3PO4
10.0 g of acetic acid (CH,COOH) is dissolved in a 500.0 ml solution. What is the molarity? Report your answer with the correct number of significant figures. Provide your answer below: M
0.420 g of an unknown diprotic acid is dissolved in about 60 mL of water in a beaker. The solution is transferred to a 100.00 mL volumetric flask, which is then filled up to the mark. The solution is mixed by inverting multiple times. 25.00 mL of this solution is then transferred to an Erlenmeyer flask for the titration. What mass of the diprotic acid is in the 25.00 mL that is transferred? Provide your answer to the correct number...
Question 15 0/4 pts The acid ionization constants of phosphoric acid (H3PO4) are Ka1 = 7.5 x 10-3. Ka2 = 6.2 x 10-8 and Ka3 - 4.2 x 10-13 at 25.0°C. What is the molar concentration of phosphate ion in a 2.5 M aqueous solution of phosphoric acid?
5) Phosphoric acid (H3PO4) is added to deionized water at a total concentration of 0.01 M and then sodium hydroxide is added until the pH is increased to 5.0. a) What is the value of the first ionization fraction (a for H2PO4)? b) What molar concentration of H2PO4' would you expect at this pH?