Coral uses carbonate ions to form its calcium carbonate skeleton according to the following reaction: CaCO3(s) ⇌ Ca2+(aq) + CO32-(aq) Predict how the equilibrium will respond as the amount of carbon dioxide in the atmosphere increases.   Please explain the reasoning for your response in 2-3 sentences.

H₂O(g) + CO(g) = H₂(g) + CO₂(g) Which of the following statements are true and which are false. The rate at which equilibrium is established can be inferred from the magnitude of the equilibrium constant. indefinite period of time ¹C would still be found only in the CO molecules and not in CO₂. When Q < K the system will spontaneously shift to the left. At equilibrium, the overall composition of the reaction mixture is constant. two vessels are equivalent. 2

1. The diagrams below represent the following reversible chemical reaction: H2(g) + 12 (g) =2 HI (g) At 448 °C, the equilibrium constant, K, for this reaction is 51 Initial Conditions: Temperature = 448 °C Volume of the container = 2.0 L 0 = 1 mole H2 (g) = 1 mole I2 (g) 00 00 .. 00 00 •. What is the initial molar concentration of hydrogen. [H:]? What is the initial molar concentration of iodide, [I2]? M This system will reach equilibrium when rate of the forward reaction is equal to the rate of the reverse reaction. Write the equilibrium constant expression, Kc, for this reaction: Calculate the equilibrium concentrations for H;(g), I (g) and HI (g) H2(g}_ + l2 (g) 2 HI (g) [H2] [L2] [HI Initial Change Equilibrium +2x -X-

Initial (M) Change (M) Equilibrium (M) Consider the reaction of SO₂ and O₂ described by the chemical reaction below. Determine the equilibrium constant for this reaction by constructing an ICE table, writing the equilibrium constant expression, and solving it. Complete Parts 1-2 before submitting your answer. 2 SO₂(g) + O₂(g) = 2 SO₂(g) NEXT A 2.00 L reaction vessel was filled 0.0432 mol SO₂ and 0.0296 mol O₂ at 900 K and allowed to react. At equilibrium, the concentration of SO, was found to be 0.0175 M. Fill in the ICE table with the appropriate value for each involved species to determine concentrations of all reactants and products. -0.00875 0.0209 0 0.00875 2SO₂(g) Question 20 of 33 2.00 0.0216 0.0432 0.0148 0.0296 0.0041 O₂(g) 0.0175 2 0.0129 -0.0175 0.0061 RESET -0.0350 0.0257 2SO₂(g)

Consider the reaction H2(g) + I2(g) → 2 HI(g). It is reported that an equilibrium mixture of this reaction system contains the following concentrations of the reacting species: Species Concentration (M) H2 1.18 x 10-2 I2 1.2 x 10-3 HI 2.59 x 10-2 Given this information, the equilibrium constant for this reaction may be calculated to have a value of:

For the endothermic reaction  A (aq) + B (aq) → C(aq) + D(s) What direction does the reaction proceed when some B is removed?                          Does the increase in temperature increase, decrease, or not affect the concentration of C?                                   Does the addition of more D increase, decrease, or not affect the concentration of C?                                   Does the addition of water to a reaction vessel where equilibrium of this reaction has been established increase, decrease, or not affect the concentration of C?

A chemical engineer is studying the following reaction: HCH;CO,(aq)+CH,NH,(aq) → CH;CO,(aq)+CH,NH,(2q) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 1.6. The engineer charges ("fills") four reaction vessels with acetic acid and methylamine, and lets the reaction begin. She then measures the composition of the mixture inside each vessel from time to time. Her first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time she measures the compositions. reaction compound expected change in cor concentration concentration vessel HCH,CO, 0.96 M O T increase OI decrease O (no change) CH, NH, 0.88 M O f increase OI decrease O (no change) A CH,Co, 0.54 M O f increase OI decrease O (no change) CH,NH, 0.45 M O f increase OI decrease O (no change) HCH, CO, 0.88 M f increase OI decrease O (no change) CH,NH, 0.77 M O f increase OI decrease O (no change) B CH, Co, 1.09 M O increase OI…

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Write the equilibrium expression for the following: I2(s) + 3XeF2(s) ↔↔ 2IF3(s) + 3Xe(g)

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4 NH3(9) + 5O2(g) → 4NO(g) + 6H,O(g) Also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound concentration at equilibrium NH, 1.8M 1.6M NO 1.7M AH,0 1.9M Calculate the value of the equilibrium constant K, for this reaction. Round your answer to 2 significant digits. C. K x10