During the standardization of NaOH, the mass of pure potassium biphthalate is 0.3001 g. The volume...

During the standardization of NaOH, the mass of pure potassium biphthalate is 0.3001 g. The volume of NaOH used is 13.54 mL. What is the molarity of the NaOH solution in M to 3 decimal places? Molecular weight NaOH: 39.997 Molecular weight potassium biphthalate: 204.263 g/mol

Solutions

Expert Solution

KHC8H4O4 (aq) + NaOH(aq) -------------> NaKC8H4O4 + H2O

1 mole 1mole

no of moles of KHP = W/G.M.Wt

= 0.3001/204.263 = 0.00147 moles

1 mole of KHP react with 1 mole of NaOH

0.00147 moles of KHP react with 0.00147 moles of NaOH

no of moles of NaOH = molarity * volume in L

0.00147 = molarity * 0.01354

molarity = 0.00147/0.01354 = 0.109M

molarity of NaOH = 0.109M

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL,...

What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL, should be used to make 5.20 L of an NaOH solution with a pH of 10.0? Express your answer to one significant figure and include the appropriate units.

1)What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL...

1)What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL , should be used to make 4.85 L of an NaOH solution with a pH of 10.5? 2)A 0.144 M solution of a monoprotic acid has a percent dissociation of 1.60%.Determine the acid ionization constant (Ka) for the acid. 3)A 9.5×10−2 M solution of a monoprotic acid has a percent dissociation of 0.59%.Determine the acid ionization constant (Ka) for the acid.

KHP mass measurements Titration of KHP with NaOH Initial (g) Final (g) Total (g) Initial NaOH...

KHP mass measurements Titration of KHP with NaOH Initial (g) Final (g) Total (g) Initial NaOH vol. (mL) Final NaOH vol. (mL) Total NaOH sol’n (mL) NaOH molarity (molarity) 73.9473 74.1675 0.2202 1.69 22.32 20.63 0.0523 97.6215 97.8296 0.2081 3.76 23.32 19.56 0.0521 95.8243 96.0261 0.2018 1.23 20.62 19.39 0.0510 From the sample volume and distances to the first and second equivalence points, calculate the molarities of hydrochloric and phosphoric acids in the sample. GIve uncertainties for the calculated molarities....

Together, a pure gold ring and a pure titanium ring have a mass of 13.64 g.13.64...

Together, a pure gold ring and a pure titanium ring have a mass of 13.64 g.13.64 g. Both rings are heated to 85.6 °C85.6 °C and dropped into 11.0 mL11.0 mL of water at 23.3 °C.23.3 °C. The water and the rings reach thermal equilibrium at a temperature of 29.5 °C.29.5 °C. The density of water is 0.998 g/mL.0.998 g/mL. The specific heat capacity of water is 4.18 Jg⋅°C,4.18 Jg·°C, the specific heat capacity of gold is 0.129 Jg⋅°C,0.129 Jg·°C, and the specific heat...

Determine the mass of NH4Cl and the volume of 0.250 M NaOH solution required to make...

Determine the mass of NH4Cl and the volume of 0.250 M NaOH solution required to make 0.15 L of a buffer solution at pH=9.20 and at a total concentration of 0.42 M. pKa(NH4+)=9.25. 1) Mass of NH4Cl: 2) Volume of NaOH solution:

Mass (g) of salicylic acid 2.0083 Volume (mL) of acetic anhydride used 3.01 Mass (g) of...

Mass (g) of salicylic acid 2.0083 Volume (mL) of acetic anhydride used 3.01 Mass (g) of filter paper 0.4629 Mass (g) of watch glass 29.6710 Mass (g) of watch glass, filter paper and aspirin 30.5178 Mass of aspirin: 0.3839 Maximum amount (g) of aspirin possible if salicylic acid is the Limiting Reagent: ? Maximum amount (g) of aspirin possible if acetic anhydride is the Limiting Reagent: ? Maximum amount (g) of aspirin possible (the Theoretical Yield): ? Percent Yield (%)...

Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 15.7 g...

Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 15.7 g of KNO3 is dissolved in 351 g of water at 23.00 °C.The temperature of the resulting solution decreases to 19.80 °C. KNO3(s)+H2O(aq)>KOH(aq)KNO3(aq) Assume the resulting solution has the same specific heat as water, 4.184 J/(g·°C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? and what is the enthalpy of the reaction?

Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure calorimeter, 44.644.6 g...

Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure calorimeter, 44.644.6 g of KNO3KNO3 is dissolved in 201201 g of water at 23.00 °C23.00 °C. KNO3(s)H2O−−→K+(aq)+NO−3(aq)KNO3(s)→H2OK+(aq)+NO3−(aq) The temperature of the resulting solution decreases to 17.70 °C17.70 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g⋅°C)4.184 J/(g·°C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? What is the enthalpy of the...

Experiment "preparation and standardization of NaOH solution" What is the purpose of an indicator soltion? What...

Experiment "preparation and standardization of NaOH solution" What is the purpose of an indicator soltion? What does standardization mean? why does the NaOH solution have to be standardized??? Calculae ho many grams of solid NaOH are needed to prepare 500mL NaOH solution with a concentration of 0.4M (show work)

Determine the mass of C6H4(CO2H)2 and the volume of 0.400 M NaOH solution required to make...

Determine the mass of C6H4(CO2H)2 and the volume of 0.400 M NaOH solution required to make 1.10 L of a buffer solution at pH=3.00 and at a total concentration of 0.38 M. pKa1(C6H4(CO2H)2)=2.95. 1. Mass of C6H4(CO2H)2 (g): 2. Volume of NaOH solution (L):

Subjects