For the reaction below: 2 NO(g) + 2 H2(g) → N2(g) + 2 H2O(g) What is the reaction constant (Q) if [NO] = 0.15M; [H2] = 0.25M; [N2] = 0.050M and [H2O] = 0.50 M? A. 0.11 B. 0.45 C. 2.2 D. 8.9
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For the reaction below:
2 NO(g) + 2 H2(g) → N2(g) + 2 H2O(g)
What is the reaction constant (Q) if [NO] = 0.15M; [H2] = 0.25M; [N2] = 0.050M and [H2O] = 0.50 M?
A. 0.11
B. 0.45
C. 2.2
D. 8.9
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- i think it is The reaction quotient can be calculated from the reactants' and products' concentrations or partial pressures. 2 SmCl3(aq) + 6 Li(aq) → 2 Sm(s) + 6 LiCl(aq) At non-standard conditions, the concentrations are: [SmCl3] = 2.00 M [Li] = 2.00M [Sm] = 0 (solid) [LiCl] = 0.0100 M The reaction quotient (Q) can be calculated as follows: Q = {[LiCl]^6}/[Sm3+ ]^2[Cl3]^2 = (0.0100)^6 /(2.00)^2 x (2.00)^2 = 6.25 x 10^-14For the reversible decomposition/hydration reaction of CH3CO2CH3 (0.308 M) and H2O (0.110 M) to yield acetic acid (0.211 M) and methanol (0.076 M), what is the value for the Law of Mass Action? The equilibrium concentrations for each chemical are provided in parentheses after their name. This reaction occurs in the aqueous phase. 629 0.0110 0.00159 0.0521 19.2Consider the equilibrium system described by the chemical reaction below, which has a value of Kc equal to 1.87 × 10⁻³ at a certain temperature. If 5.00 g of solid PH₃BCl₃ and 0.0700 g of BCl₃ are added to a 4.500 L reaction vessel, what will the equilibrium concentration of PH₃ be? PH₃BCl₃(s) ⇌ PH₃(g) + BCl₃(g) 1.) Set up the expression for Qc and then evaluate it to determine the direction of the reaction. Do not combine or simplify terms 2.) Based on the given values and your value for Qc, set up ICE table in order to determine the unknown. 3.) Based on your ICE table, set up the expression foe Kc in order to determine the unknown. 4.) Based on your ICE table and expression for Kc, solve for the partial pressure of PH3, at equilibrium.
- Write the mathematical expression for the reaction quotient, Qc, for each of the following reactions: (A) N2(?)+3H2(?)⇌2NH3(?) (B) 4NHN3(g)+5O2(g)⇌4NO(g)+6H2O(g) (C) N2O4(?)⇌2NO2(?) (D) CO2(g)+H2(g)⇌CO(g)+H2O(g) (E) NH4Cl(s)⇌NH3(g)+HCl(g) (F) 2Pb(NO3)2(s)⇌2PbO(s)+4NO2(g)+O2(g) (G) 2H2(g)+O2(g)⇌2H2O(l) (H) S8(g)⇌8S(g)Calculate the percentage change in Kx for the reaction CH3OH(g) + NOCl(g) ⇋ HCl(g) + CH3NO2(g) when the total pressure is increased from 1.0 bar to 2.0 bar at constant temperature.Write the expression for Kc for the following reactions. Ineach case indicate whether the reaction is homogeneousor heterogeneous.(a) 3 NO(g) ⇌ N2O(g) + NO2(g)(b) CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g)(c) Ni(CO)4(g) ⇌ Ni(s)+ 4 CO(g)(d) HF(aq) ⇌ H+(aq) + F-(aq)(e) 2 Ag(s) + Zn2+(aq) ⇌ 2 Ag+(aq) + Zn(s)(f) H2O(l) ⇌ H+(aq) + OH-(aq)(g) 2 H2O(l) ⇌ 2 H+(aq) + 2 OH-(aq)
- The following are Biophysical Chemistry Questions: When we are determining the equilibrium affinity (K) for a binding reaction or the rate constant (k) for a reaction, why do we make multiple measurements? Why is it useful to put one (or more) reagents in great excess of the other (for equilibrium analysis or kinetic analysis?) Why do you start learning about heat and work in thermodynamics witht the ideal gases instead of chemical reactions?Write the mathematical expression for the reaction quotient, Qc, for each of the following reactions:(a) N2(g) + 3H2(g) ⇌ 2NH3(g)(b) 4NH3(g) + 5O2(g) ⇌ 4NO(g) + 6H2 O(g)(c) N2 O4(g) ⇌ 2NO2(g)(d) CO2(g) + H2(g) ⇌ CO(g) + H2 O(g)(e) NH4 Cl(s) ⇌ NH3(g) + HCl(g)(f) 2Pb(NO3)2(s) ⇌ 2PbO(s) + 4NO2(g) + O2(g)(g) 2H2(g) + O2(g) ⇌ 2H2 O(l)(h) S8(g) ⇌ 8S(g)Consider the following reaction where Kc = 77.5 at 600 K.CO(g) + Cl2(g) COCl2(g)A reaction mixture was found to contain 4.68×10-2 moles of CO(g), 4.17×10-2 moles of Cl2(g) and 0.123 moles of COCl2(g), in a 1.00 liter container.Is the reaction at equilibrium?If not, what direction must it run in order to reach equilibrium?The reaction quotient, Qc, equals .The reactionfill in the blank 2A. must run in the forward direction to reach equilibrium.B. must run in the reverse direction to reach equilibrium.C. is at equilibrium.
- Write the mathematical expression for the reaction quotient, Qc, for each of the following reactions:(a) N2(g) + 3H2(g) ⇌ 2NH3(g)(b) 4NH3(g) + 5O2(g) ⇌ 4NO(g) + 6H2 O(g)(c) N2 O4(g) ⇌ 2NO2(g)(d) CO2(g) + H2(g) ⇌ CO(g) + H2 O(g)(e) NH4Cl(s) ⇌ NH3(g) + HCl(g)(f) 2Pb⎛⎝NO3⎞⎠2(s) ⇌ 2PbO(s) + 4NO2(g) + O2(g)(g) 2H2(g) + O2(g) ⇌ 2H2 O(l)(h) S8(g) ⇌ 8S(g)A(n) _____________ is a species that exists for a finite period of time during a reaction before it is converted to product.For the reaction SO 2(g) + Cl 2(g) → SO 2Cl 2(g), K eq = 0.377 at 25 °C. What is Δ G° for the reaction?