At 1 atm, how much energy is required to heat 75.0 g of H2O(s) at –10.0 °C to H2O(g) at 137.0 °C?

Use data from Appendix C to calculate the equilibrium constant, K, and ΔG∘ at 298 K for each of the following reactions.

H2(g)+I2(g)⇌2HI(g)
Calculate ΔG∘.

Express your answer to four significant figures and include the appropriate units.

Part A

H2(g)+I2(g)⇌2HI(g)
Calculate ΔG∘.

Express your answer to four significant figures and include the appropriate units.

Part B

Calculate the equilibrium constant, K.

Express your answer using two significant figures.

Part C

C2H5OH(g)⇌C2H4(g)+H2O(g)
Calculate ΔG∘.

Express your answer to two significant figures and include the appropriate units.

Part D

Calculate the equilibrium constant, K.

Express your answer using two significant figures.

Part E

3C2H2(g)⇌C6H6(g)
Calculate ΔG∘.

Express your answer to four significant figures and include the appropriate units.

Part F

Calculate the equilibrium constant, K.

Express your answer using one significant figure.

DIRECT METHOD EXAMPLE: A buffer was created by mixing 10 mL of a 0.10 M hydrofluoric acid solution with 25 mL of a 0.20 M sodium fluoride solution. What is this solution’s pH? Do you expect it to be a ‘good’ buffer with a high buffer capacity or a ‘poor’ buffer with low capacity? The Ka of hydrofluoric acid is: 7.2 x 10-4. Show work, thank you.

Phenol is soluble in NaOH (aq) and not NaHCO3 (aq) while benzoic acid is soluble in both solutions. Explain how a mixture of phenol, benzoic acid, p-nitroaniline and anthracene can be separated by extraction. PLEASE Dont forget to talk about anthracene!

Write and balance equations for the following acid-base neutralization reactions.

Part A

CsOH(aq)+H2SO4(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

Part B

Ca(OH)2(aq)+CH3CO2H(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

Part C

NaHCO3(aq)+HBr(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

2.Calculate the molar masses of the following substances.

Part A

Aluminum sulfate, Al2(SO4)3

Part B

Sodium bicarbonate, NaHCO3

Part C

Diethyl ether, (C2H5)2O

Part D

Penicillin V, C16H18N2O5S

The products of our reaction (1- and 2-heptene) can form peroxides upon standing in air for a prolonged period of time. Why is 1-heptene more likely to form peroxides than heptane?

At a pressure of 907 mbar , what would the height of the mercury in the column of a mercury barometer?

also

A closed container is filled with oxygen. The pressure in the container is 205 kPa . What is the pressure in millimeters of mercury?

how does atomic radius, ionization energt, or electron affinity explains the solubility of ions?

A mole of air is sampled from the atmosphere when the atmospheric pressure is 765 mmHg, the temperature is 25 C, an relative humidity is 75%. The sample of air is placed inside a closed container and heated to 135 C and then compressed to 2 atm. What are the relative humidity, the humidity, and the mole fraction of water in the compressed air?

What mass of ammonium chloride should be added to 2.55 L of a 0.150 M NH3 in order to obtain a buffer with a pH of 9.60?

The osmotic pressure, Π, of a solution of glucose is 34.2 atm . Find the molarity of the solution at 298 K. Express the molarity to three significant figures and include the appropriate units.

At 1 atm, how much energy is required to heat 65.0 g of H2O(s) at –18.0 °C to H2O(g) at 161.0 °C?

Q: A mixture of 0.423 moles of N₂ and 5.73 moles of CO₂ has a total pressure of 777 torr. What is the partial pressure of N₂?

Please give the details of the ploblem, thanks.

Calculate the pH of a 25.0 mL sample solution of phosphoric acid if its requires 20.5 mL of 0.10 M NaOH to neutralize the solution. The acid dissociation constants are listed in See Table 16.3.

What does the angle of twist mean in chemical compunds? Specifically BINOL.

Where can I find references?