Neutralisation equation is,
X(OH)3 (aq) + 3 HCl (aq) -----------> XCl3 (aq) + 3 H2O (l)
Neutralisation formula,
M1 V1 / n1 = M2 V2 / n2
M1 X 4.00 / 1 = 0.0100 X 7.33 / 3
M1 = 0.0100 X 7.33 / ( 3 X 4.00 )
M1 = Concentration of X(OH)3 = 0.00611 M
Solubility equation is,
X(OH)3 (s)
X^3+ (aq) + 3 OH^- (aq)
[X3+] = [X(OH)3] = 0.00611 M
[OH^-] = 3 X [X(OH)3] = 3 X 0.00611 = 0.0183 M
Solubility product expression can be written as,
Ksp = [X^3+][OH-]^3
Ksp = ( 0.00611 ) * ( 0.0183 )^3
Ksp = 3.74 X 10^-8
You prepare a solid salt with formula X(OH)3. You wash the solid, redissolved most but not...
2. Calculate the mass of solid sodium hydroxide needed to prepare 300 mL of 0.1 M sodium hydroxide. Note: Be sure to include this mass in the procedure for Part C. 3. A 0.6250 g sample of KHP (204.2 g/mol), dissolved in 50 mL water, required 28.50 mL of sodium hydroxide to reach the end point. What is the concentration of the sodium hydroxide solution? 4. A 25.00 mL sample of hydrochloric acid was titrated using the same sodium hydroxide...
Consider the following data for questions A-F: two solutions
of an unknown slightly soluble salt, A(OH)2, we're allowed to
equalibrate – one at 25°C and the other at 80°C. A 15 mL aliquot of
each solution is titrated with 0.240 M hydrochloric acid. 8.30 mL
of the acid is required to reach the endpoint of a titration at
25°C, while 75.07 mL are required for the 80°C solution. What is
the Ksp at 80° C?
Exp 10 Solubility and Thermodynamics)...
Two solutions of an unknown slightly soluble salt, A(OH)2, were allowed to equilibrate -- one at 25oC and the other at 80 oC. A 15.00 mL aliquot of each solution is titrated with 0.200 M HCl. 9.00 mL of the acid is required to reach the endpoint of the titration at 25 oC, while 74.35 mL are required for the 80 oC solution. The ksp at 25 degrees celsius is 0.000864. What is the ∆G (in kJ/mol) at 25 degrees...
Consider the following data for questions A–F: Two solutions of an unknown slightly soluble salt, A(OH)2, were allowed to equilibrate—one at 25 °C and the other at 80 °C. A 15.00 mL-aliquot of each solution is titrated with 0.200 M HCl. 8.87 mL of the acid is required to reach the endpoint of the titration at 25 °C, while 66.42 mL mL are required for the 80 °C solution. Part A Calculate the Ksp at 25 °C.
Consider the following data for questions A–F: Two solutions of an unknown slightly soluble salt, A(OH)2, were allowed to equilibrate—one at 25 °C and the other at 80 °C. A 15.00 mL-aliquot of each solution is titrated with 0.310 M HCl. 6.35 mL of the acid is required to reach the endpoint of the titration at 25 °C, while 77.19 mL mL are required for the 80 °C solution. Part A Calculate the Ksp at 25 °C.
A sample of solid Ca(OH)2 was stirred in water at a certain temperature until the solution contained as much dissolved Ca(OH)2 as it could hold. A 93.4-mL sample of this solution was withdrawn and titrated with 0.0830 M HBr. It required 88.3 mL of the acid solution for neutralization. (a) What was the molarity of the Ca(OH)2 solution? (b) What is the solubility of Ca(OH)2 in water, at the experimental temperature, in grams of Ca(OH)2 per 100 mL of solution?
A sample of solid Ca(OH)2 was stirred in water at a certain temperature until the solution contained as much dissolved Ca(OH)2 as it could hold. A 93.4-mL sample of this solution was withdrawn and titrated with 0.0830 M HBr. It required 88.3 mL of the acid solution for neutralization. (a) What was the molarity of the Ca(OH)2 solution? (b) What is the solubility of Ca(OH)2 in water, at the experimental temperature, in grams of Ca(OH)2 per 100 mL of solution?
answer (2)
2. Suppose that you used a known concentration (0.8442 M) of Ca(OH)2 to determine the concentration of an unknown HBr solution. If it takes 12.88 mL of the Ca(OH)2 solution to titrate 15.00 mL of the unknown HBr solution, what is the molarity of the HBr? 1. A solid diprotic weak acid, H2A (molecular weight = 128.9 g/mol) is used to standardize a KOH solution. When 0.4228 g of the acid is dissolved in 40.0 mL of water...
Consider the following data for questions A–F: Two solutions of an unknown slightly soluble salt, A(OH)2, were allowed to equilibrate—one at 25 °C and the other at 80 °C. A 15.00 mL-aliquot of each solution is titrated with 0.320 M HCl. 6.19 mL of the acid is required to reach the endpoint of the titration at 25 °C, while 60.14 mL mL are required for the 80 °C solution. QUESTION: Calculate the Gibbs free energy (in kJ/mol) at 80 degrees...
ALT CHEM 125 Name Determining the Ksp of Calcium Hydroxide Calcium hydroxide is an ionie solid that is sparingly soluble in water. A saturated, aqueous, solution of Ca(OH), is represented in equation form as shown below. Ca(OH)2 (5) --- Ca' (aq) + 2OH(aq) The solubility product expression describes, in mathematical terms, the equilibrium that is established between the solid substance and its dissolved ions in an aqueous system. The equilibrium expression for calcium hydroxide is shown below. Kp - [Ca][OHT...