Question

What is the standard molar entropy for calcium hydroxide, Ca(OH)2? Express your answer in units of...

What is the standard molar entropy for calcium hydroxide, Ca(OH)2?

Express your answer in units of J/mol*K

What is the entropy of 4.06 g of Ca(OH)2?

Express your answer in units of J/K

Homework Answers

Answer #1

~~~~~~

The standard molar entropy for calcium hydroxide, Ca(OH)2 = 83.4 J/(mol K).

given-

4.06 g of Ca(OH)2

molecular weight of Ca(OH)2- 40+32+2 = 74 g/mol

moles of Ca(OH)2= 4.06/74

                         = 0.05 moles

Hence entropy of 4.06 g of Ca(OH)2 = 0.05 mol X 83.4 J/(mol K).

                                                    = 4.17 J/K

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Question Molar Solubility and solubility Product of Calcium Hydroxide: 1. Volume of Saturated Ca(OH)2 solution (mL)...
Question Molar Solubility and solubility Product of Calcium Hydroxide: 1. Volume of Saturated Ca(OH)2 solution (mL) = 25.0 mL 2. Concentration of Standardized HCL solution (mol/L) = 0.05 mol/L 3. Buret reading, initial (mL) = 50.0 mL 4. Buret reading, final (mL) = 32.5 mL 5. Volume of HCL added (mL) = 17.5 mL 6. Moles of HCL added (mol) = (concentration of HCl)(Volume of HCl) = (0.05)(19.1) = 0.875 mol. 7.Moles of OH- in saturated solution (mol)=8.75x10^-4 8.the [OH-]...
What is the pH of a saturated solution of Ca(OH)2 if the solubility of calcium hydroxide...
What is the pH of a saturated solution of Ca(OH)2 if the solubility of calcium hydroxide is 1.50 g/L?
Calcium hydroxide, Ca(OH)2, is a dibasic compound, producing 2 moles of OH− for every mole of...
Calcium hydroxide, Ca(OH)2, is a dibasic compound, producing 2 moles of OH− for every mole of calcium hydroxide. If the pH of a calcium hydroxide solution is 10.52, what is the [OH−] in the solution and the initial [Ca(OH)2]. Hint: For dibasic ionic compounds, we assume that the compound dissociates completely in solution.
Calcium hydroxide is decomposed as follows. Ca(OH)2(s) → CaO(s) + H2O(g) a) From the thermodynamic quantities...
Calcium hydroxide is decomposed as follows. Ca(OH)2(s) → CaO(s) + H2O(g) a) From the thermodynamic quantities listed in the supporting material, predict whether this reaction will occur at 298 K. b) Above what temperature will the reaction occur? Assume ΔrH° and ΔrS° are temperature independent
(1) Calculate the entropy change of the UNIVERSE when 1.734 moles of Ca(OH)2(aq) react under standard...
(1) Calculate the entropy change of the UNIVERSE when 1.734 moles of Ca(OH)2(aq) react under standard conditions at 298.15 K. Consider the reaction Ca(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l) for which H° = -30.20 kJ and S° = 205.9 J/K at 298.15 K. (2) Is this reaction reactant or product favored under standard conditions? (3) If the reaction is product favored, is it enthalpy favored, entropy favored, or favored by both enthalpy and entropy? If the reaction is reactant favored, choose...
A student dissolves 5.00 g calcium hydroxide to make 100.0 mL of solution. If 63.5 mL...
A student dissolves 5.00 g calcium hydroxide to make 100.0 mL of solution. If 63.5 mL of this solution is required to neutralize 150.0 mL of a hydrofluoric acid solution, what is the concentration of the original HF solution? (The molar mass of Ca(OH)2 is 74.10 g/mol.) I need help with this asap please.
The hydroxide ion concentration, [OH-], in each of your trials can be calculated from the concentration...
The hydroxide ion concentration, [OH-], in each of your trials can be calculated from the concentration of the hydrochloric acid, 0.050 M HCl, and the volume of both the HCl and Ca(OH)2 used in the titration. According to the net ionic equation (calcium hydroxide, Ca(OH)2 (s), in water) determine the ratio of moles of calcium ion, Ca2+, to moles of hydroxide ion, OH-, in the solution of calcium hydroxide, Ca(OH)2. Using this ratio, determine the molarity of calcium ion in...
The standard molar entropy of benzene is 173.3 J/K-mol. Calculate the change in its standard molar...
The standard molar entropy of benzene is 173.3 J/K-mol. Calculate the change in its standard molar Gibbs energy when benzene is heated from 25C to 45C.
An unknown quantity of Ca(OH)2 is added to the pure water. At equilibrium, the final pH...
An unknown quantity of Ca(OH)2 is added to the pure water. At equilibrium, the final pH was found to be 9.2. MM of Ca(OH)2=74g/mol Calcium hydroxide: Ca(OH)2 -> Ca2+ + 2OH- Ksp: 2 x 10-14  M3 Water dissociation: H2O -> H+ + OH Kw: 1.0 x 10-14 M2 Is there any solid remaining at equilibrium? Explain quantitatively.
Solid calcium hudoxide reacts with phosphoric acid according to the following equation: 3 Ca(OH)2+ 2H3PO4--- Ca3(PO4)2+...
Solid calcium hudoxide reacts with phosphoric acid according to the following equation: 3 Ca(OH)2+ 2H3PO4--- Ca3(PO4)2+ 6 H2O what in volume of 0.0220 M phosphoric acid can be neutralized by 94.651 grams of Calcium hydroxide
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT