V= 30.0ml Concentration= 0.1001 M
1.) Using the volume and concentration of Ca(OH)2 recorded in your experiment, calculate the
volume of 0.0750 M phosphoric acid required to exactly react with it. This is the equivalence
point of your titration.
2.) Calculate the percent error of volumes at the equivalence point
equation of reaction :
3 Ca(OH)2 + 2 H3PO4
Ca3(PO4)2 + 6 H2O
Moles of Ca(OH)2 = Molairity * Volume = 0.1001 * 30 * 10-3 = 3.003 * 10-3 moles
Moles of H3PO4 = Moles of Ca(OH)2 * 2/3 (from the equation) = Molarity * Volume
3.003 * 10-3 * 2 / 3 = 0.0750 * V
Solving, we get: V = 26.693 ml
V= 30.0ml Concentration= 0.1001 M 1.) Using the volume and concentration of Ca(OH)2 recorded in your...
an aqueous solution of Ca(OH)2 with a concentration
Ca(OH)2(ag)+2HC1 (aq)CaCl, (ag)+H,O() An aqueous solution of Ca(OH)2with a concentration of 0.164 M was used to titrate 25.00 mL of aqueous HCI. 16.53 mL of the Ca(OH)2was required to reach the endpoint of the titration. ACID-BASE TITRATIONS Introduction Pt A titration is the sequential addition of reactant to a solution containina other Part 1 (1 point) How many moles of base were required to react completely with the acid in this reaction?...
An aqueous solution of Ca(OH)2with a concentration of
0.143 M was used to titrate 25.00 mL of aqueous HCl. 14.73
mL of the Ca(OH)2was required to reach the endpoint of
the titration.
How many moles of base were required to react completely with the
acid in this reaction?
How many moles of HCl were present in the original 25.00 mL of
acid?
What is the molarity of the original HCl solution?
04 Question (a points) aSee page 166 Watch the...
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration.
Part 1 (1 point) How many moles of base were required to react completely with the acid in this reaction? x 10 mol Ca(OH)2 -- Part 2 (1 point) How many moles of HCl were present in the original 25.00 mL of acid? x 10 mol HCl +...
52. Consider the titration of 20.0 ml of 0.45 M HOCI (Ka = 1.3x10-5) with 0.15 M Ca(OH)2. a. What is the volume of 0.15 M Ca(OH)2 required to reach the equivalence point. b. What is the pH of the solution at the point which is half-way to the equivalence point? c . C. What is the pH of the solution after addition of a total of 20.0 ml of 0.15 M Ca(OH)2? d. What is the pH of the...
Ca(OH)2 (aq) + 2HCl (aq) CaCl2 (aq) + H2O (l)
An aqueous solution of Ca(OH)2with a concentration of
0.161 M was used to titrate 25.00 mL of aqueous HCl. 18.63
mL of the Ca(OH)2was required to reach the endpoint of
the titration. An aqueous solution of Ca(OH)2with a
concentration of 0.161 M was used to titrate 25.00 mL of
aqueous HCl. 18.63 mL of the Ca(OH)2was required to
reach the endpoint of the titration.
A) How many moles of base...
help please and thanks
4. A group of students conducted a titration of 25.00-ml saturated Ca(OH)2 solution with 0.0480M HCI. The students found that 10.10-mL of acid was required to reach the equivalence point. Calculate the molar concentration of OH and Ca, the molar solubility, and K. of the analyte. Show detailed calculation for each Detailed Method of Calculation (OH) in the analyte: Ca?) in the analyte: molar solubility of Ca(OH)2: Ksp of Ca(OH)2:
1. Use the data given to calculate the following parts:
a. Using your data for the value for VEP1, calculate the
molarity of H3PO4 at the 1st equivalence point, EP1. Show work
clearly, with units and correct significant figures.
b. Using your data for the value for VEP2, calculate the
molarity of H3PO4 at the 2nd equivalence point, EP2. Show work
clearly, with units and correct significant figures.
c. Calculate the percent error between these two molarity
values, % error...
To determine the Ca^2+ concentration in water sample, a standard EDTA solution of 0.01988 M was used to titrate 25 ml. of the sample solution with the presence of an ammonium buffer (pH 10). If 15.80 ml. of the standard EDTA was used to reach the end point, calculate the molar concentration and the ppm concentration of the unknown Ca^2+ (atomic weight of Ca = 40.08g/mole) solution The amount of 0.2915g of benzoic acid was dissolved in 100 ml. of...
Homework Acids and Bases Name: 1) Write in the products for this acid-base neutralization reaction, then balance the equation. HBr(aq) + Ca(OH)2(aq) → 2) A 8.00-ml sample of an H.PO, solution of unknown concentration is titrated with a 0.2090 M NaOH solution. A volume of 6.12 mL of the NaOH solution was required to reach the equivalence point. What is the concentration of the unknown H3PO4 solution? 3 NaOH + H3PO4 → Na3PO4 + 3 H20 3) What volume in...
Consider this equation, describing a titration you performed during the electrolytes lab in Chem 151: 2 H3PO4 (aq) + 3 Ca(OH)2 (aq) → Ca3(PO4)2 (s) + 6 H2O (l) a) Calculate the volume of 0.0500 M phosphoric acid that would be required to exactly react with 20.0 mL of 0.100 M calcium hydroxide b) What mass of calcium phosphate will precipitate?