The reaction
is first order in both I2 and
SiH4, with k = 2.14
L mol-1 s-1 at
255°C. If 1.00 L of
I2(g) at a concentration of
2.44×10-3 M is rapidly mixed with the
same volume of SiH4(g) also at a
concentration of 2.44×10-3 M, what is
the time (in seconds) required for the
I2 concentration to decrease to a value
of 3.38×10-4 M?
HINT: Because the reaction conditions and stoichiometry are such
that the concentrations of the two reacting species are always
equal, the integrated rate law for the reaction is:
1/C = 1/c0 + kt
where c and c0 represent concentrations of either of the reactants.
___________ s
The reaction I2(g) +SiH4(g) -------> HI(g) +SiH3I(g) is first order in both I2 and SiH4, with...
The following reaction: H2 (g) + I2 (g) ⇋ 2 HI (g) Has an equilibrium constant of 30.5 under certain conditions. If initial concentrations of reactants and product are: [H2] = 0.100 M; [I2] = 0.100 M; and [HI] = 0.250 M, what will be the equilibrium concentration of HI?
consider the equilibrium reaction of H2 (g) + I2 (g) <-----> 2 HI (g) it has an equilibrium constant Kc = 54.3 at 430°C. if the initial concentration of [HI]0 = 2.000 M. what are the equilibrium concentrations?
The reaction C2H4(g) + N2O(g) --------> CH3CHO(g) +NO(g) is first order in both C2H4 and N2O, with k = 1.46×10-3 L (mol^-1)(s^-1) at 580°C. If 1.00 L of C2H4(g) at a concentration of 3.50×10-3 M is rapidly mixed with the same volume of N2O(g) also at a concentration of 3.50×10-3 M, what is the time (in seconds) required for the C2H4 concentration to decrease to a value of 1.06×10-3 M?
1. Consider the following reaction: H2(g) + I2(g) ⇌ 2 HI(g) If a reaction mixture initially contains 2.8 M H2 and 2.8 M I2. Determine the equilibrium concentrations of all species. Kc for the reaction at this temperature is 1.3 × 10-3. . . 2. Given the following reaction: N2(g) + 3H2(g) ↔ 2NH3(g) If the initial concentrations of N2and H2are 0.350 M and 0.850 M respectively. What is Kc if the equilibrium concentration of N2is 0.175 M?
Consider the following reaction: H2 (g) + I2 (g) ⇌ 2 HI (g) Complete the following table. Assume that all concentrations are equilibrium concentrations in M. T(∘C) [H2] [I2] [HI] [Kc] 25 0.0355 0.0388 0.922 − 340 − 4.55×10−2 M 0.384 M 90.6 445 4.90×10−2 M 4.74×10−2 M − 50.2 Find Kc at 25 ∘C. Find [H2] at 340 ∘C. Find [HI] at 445 ∘C.
Consider the equilibrium reaction. H2(g) + I2(g) equilibrium reaction arrow 2 HI(g) In this case, 1.000 M H2 reacts with 2.000 M of I2 at a temperature of 414°C. The value of Kc = 72. Determine the equilibrium concentrations of H2, I2, and HI. [H2] [I2] [HI]
The equilibrium constant, Kc, for the following reaction is 55.6 at 698 K: H2(g) + I2(g) 2HI(g) Calculate the equilibrium concentrations of reactants and product when 0.293 moles of H2 and 0.293 moles of I2 are introduced into a 1.00 L vessel at 698 K. [H2] = M [I2] = M [HI] = M
the following statements relate to the reaction for the formation of HI: H2(g) + I2(g)--> 2HI(g) Rate= k[H2][I2] Determine which of the following statements is true. (a) The reaction must occur in a single step (b) This is a second-order reaction overall (c) If the concentrations of both reactants are doubled, the rate will double (d) Raising the temperature lowers the activation energy for this reaction
Kc for the reaction of hydrogen and iodine to produce hydrogen iodide, H2(g) + I2(g) ⇌ 2HI(g) is 54.3 at 430°C. Determine the initial and equilibrium concentration of HI if initial concentrations of H2 and I2 are both 0.10 M and their equilibrium concentrations are both 0.052 M at 430°C
The reaction 2HI → H2 + I2 is second order in [HI] and second order overall. The rate constant of the reaction at 700°C is 1.57 × 10−5 M −1s−1. Suppose you have a sample in which the concentration of HI is 0.75 M. What was the concentration of HI 8 hours earlier? A) 0.45 M B) 0.75 M C) 2.3 M D) 1.9 M