The dissociation of the weak acid, nitrous acid, HNO2, takes place according to the reaction: HNO2 (aq) ⇌ H+ (aq) + NO2 – (aq) K=7.2 X 10-4 When 1.00 mole of HNO2 is added to 1.00 L of water, the H+ concentration at equilibrium is 0.0265 M. A) Calculate the value of Q if 1.00 L of water is added? B) How will reaction shift if 1.00 L of water is added?

Choose the equilibrium constant expressions for the following reactions. a) 2SO2(g) + O2(g)  2SO3(g)      Keq =   b) CS2(g) + 4H2(g)   CH4(g) + 2H2S(g)                            Keq =

Consider the reaction, 2AB2(g) = A2(g) + 2B2(g), Kc = 0.263 at 25°C. The reaction begins with an unknown concentration of AB2 in the reaction flask. At equilibrium, the concentration of AB2 is found to be 0.00545 M. a) Complete the ICEE table below, b) Write the equilibrium expression and equation for this reaction (pay close attention to coefficients!), c) Calculate the equilibrium concentration of both products, and d) Calculate the initial concentration of AB2. You should confirm that your equilibrium concentrations will give the correct equilibrium constant when plugged into the expression. ICEE table I C E 2 AB₂(g) A₂(g) + 2 B₂(g)

Steam reforming of methane ( CH, ) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which Is the starting point for many 4 Important Industrial chemical syntheses. An Industrial chemist studying this reaction fills a 50.0 L tank with 3.7 mol of methane gas and 4.9 mol of water vapor, and when the mixture has come to equilibrium measures the amount of hydrogen gas to be 7.8 mol. Calculate the concentration equilibrium constant for the steam reforming of methane at the final temperature of the mixture. Round your answer to 2 significant digits. K =] x10 Check Explanation 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy Accessib 6. M9 hp

A chemical engineer is studying the following reaction: HCH;CO,(aq)+CH;NH,(aq) → CH;CO,(aq)+CH,NH,(aq) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.73. The engineer charges ("fills") four reaction vessels with acetic acid and methylamine, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time he measures the compositions. reaction compound concentration expected change in concentration vessel HCH;CO, 1.18 M f increase I decrease (no change) CH, NH, 0.97 M f increase OI decrease O (no change) A CH,CO, 0.39 M f increase O I decrease (no change) + CH,NH, 0.39 M f increase Ot decrease (no change) HCH,CO, 1.15 M f increase OI decrease O (no change) CH,NH, 0.88 M t increase I decrease (no change) В CH,CO, 0.86 M f increase OI decrease (no change) CH,NH,…

Water gas is a 1:1 mixture of carbon monoxide and hydrogen gas and is called water gas because it is formed from steam and hot carbon in the following reaction: H2 O(g) + C(s) ⇌ H2(g) + CO(g). Methanol, a liquid fuel that could possibly replace gasoline, can be prepared from water gas and hydrogen at high temperature and pressure in the presence of a suitable catalyst.(a) Write the expression for the equilibrium constant (Kc) for the reversible reaction2H2(g) + CO(g) ⇌ CH3 OH(g)                                ΔH = −90.2 kJ(b) What will happen to the concentrations of H2, CO, and CH3OH at equilibrium if more H2 is added?(c) What will happen to the concentrations of H2, CO, and CH3OH at equilibrium if CO is removed?(d) What will happen to the concentrations of H2, CO, and CH3OH at equilibrium if CH3OH is added?(e) What will happen to the concentrations of H2, CO, and CH3OH at equilibrium if the temperature of the system is increased?(f) What will happen to the concentrations of H2, CO,…

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…

6) Given the reaction: A(aq) + B(aq) ⇌ 2C(aq) + D(aq). 2.00 moles of each reactant were dissolved into 1.00 literof water. The reaction reached equilibrium, and at equilibrium the concentration of A was 1.60 M.A) Calculate the equilibrium concentrations for each substance. B) Write the equilibrium constant expression. C) Calculate the value for the equilibrium constant, Keq.

A chem ngineer is studying the following reaction: + HCN(aq) + NH3(aq) → CN¯(aq)+NH (aq) At the temperature the engineer picks, the equilibrium constant K for this reaction is 1.1. C The engineer charges ("fills") four reaction vessels with hydrogen cyanide and ammonia, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time he measures the compositions. reaction vessel A B C compound HCN NH3 CN NH4 HCN NH3 CN NH₁ HCN NH₂ CN NHA 4 concentration 0.28 M 0.12 M 1.05 M 0.94 M 0.67 M 0.51 M 0.66 M 0.55 M 0.31 M 0.15 M 1.02 M 0.91 M expected change in concentration ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↑ increase ↓ decrease ↓decrease ↓ decrease 888888 ↓decrease ↓ decrease ↓decrease ↓ decrease ↓ decrease ↓decrease…

Consider the following system at equilibrium where AH° = 16.1 kJ, and K = 0.00650, at 298 K: 2NOBr(g) → 2NO(g) + Br₂ (g) When 0.36 moles of NO(g) are added to the equilibrium system at constant temperature: The value of K O increases decreases remains the same The value of Qc O is greater than K O is equal to Ke O is less than Ke The reaction must Orun in the forward direction to reestablish equilibrium run in the reverse direction to reestablish equilibrium O remain in the current position, since it is already at equilibrium The concentration of NO will increase decrease O remain the same