Chemistry Answers

Write the Kc and Kp for the following reactions. indicate whether the equilibrium system is homogeneous or heterogeneous.

a. 2KCIO3 (s) ⇌2KCI (s) + 3O2 (g)

b. 3O2(g) ⇌2O3 (g)

c. Bi2S3 (s) ⇌2Bi3+ (aq) + 3S¯² (aq)

Calculate the standard free-energy change for the reaction at 25 ∘C.

Refer to the list of standard reduction potentials.

2Au3+(aq)+3Mg(s)↽−−⇀2Au(s)+3Mg2+(aq)

Δ𝐺∘= kJ

In a particular redox reaction, NO is oxidized to NO−3 and Ag+ is reduced to Ag. Complete and balance the equation for this reaction in acidic solution. Phases are optional.

balanced redox reaction:

The Δ𝐻vap of a certain compound is 10.14 kJ·mol−1 and its Δ𝑆vap is 78.22 J·mol −1·K−1.

What is the boiling point of this compound?

A balloon comma inflated in an air conditioned room at 30° , has a volume of 5.0 l period is heated to a temperature of 50 degrees . Which of the following is the new volume of the balloon a balloon, inflated in an air condition room at 33, has a volume of 5.0 l. It's needed to temperature 50 degree Read following is the new volume of the balloon if

Mixing sodium bicarbonate and citric acid in a solution produce carbon dioxide that shows as fizz. Given the balanced reaction below, what is the amount in grams of citric acid should be added to 0.5 g sodium bicarbonate to have a complete reaction?

3 NaHCO₃ (aq) + C₆H₈O₇ (aq) ---> 3CO₂ (g) + 3H₂O (l) + Na₃C₆H₅O₇ (aq)

G: 0.5 g NaHCO₃

F: g of C₆H₈O₇

MM: 1 mol NaHCO₃ = 84.01 g NaHCO₃

1 mol C₆H₈O₇ = 192.12 g C₆H₈O₇

MR: 1 mol C₆H₈O₇ = 3 mol NaHCO₃

an aqueous solution has 0.0400 g of NaCI (solute) in 2.00 kg H20 (solvent).what is the concentration of solution in parts per million

if 0.650 solution of na2co3 will be use to precipitate ca+2 from solution, determin the amount of solution in grams needed to precipitate 5.00x102ml of 0.01120m ca+?(atomic mass:na=22.99 g/mol;c=12.01g/mol;0=16.00g/mol;ca=40.08g/mol;ans.91.3g

3.3 g of magnesium oxide are produced when 3.0 g of magnesium reacts with 5.0 g of oxygen gas. Calculate the percent yield of magnesium oxide produced.

A gas with a volume of 525 rnL at a temperature of �25°C is heated to 175°C. What is the new volume of the gas if pressure and number of moles are held constant