Question

In: Chemistry

From an initial mix of: 2 mol Cl2, 1 mol Br2, 1 mol I2, 1 mol...

From an initial mix of: 2 mol Cl2, 1 mol Br2, 1 mol I2, 1 mol Cl−, 1 mol Br−, & 5 mol I−; the total quantity of Br2  present after all possible reactions occur is

0 mol
1 mol
2 mol
0.5 mol

Solutions

Expert Solution

The order of oxidising strength or the tandency of different halogens to reduce is

Cl2 > Br2 > I2

Hence Cl2 oxidises both Br- and I- to Br2 and I2 respectively and itself reduced to Cl-.

Similarly, Br2 oxidises only I- to I2 and itself reduced to Br-.

and I2 cannot oxidise either of Cl- and Br-.

Hence the following ractions occur

Cl2 having highest oxidising strength, and I- having the highest reducing strength, they will first react with eachother.

Cl2 + 2I- ---> I2 + 2Cl-

Initial: 2mol 5mol 1 mol 1 mol

final: 0mol 1 mol 3 mol 5 mol

Now Cl2 shuld react with Br2, but since no Cl2 is left , it will not react with Br2.

Now Br2 having the second highest oxidising strength, and I- having the highest reducing strength, they will react with each other.

Br2 + 2I- ---> I2 + 2Br-

Initial: 1mol 1mol 3 mol 1 mol

final: 0.5mol 0 mol 3.5 mol 2 mol

In the above reaction, only 0.5 mol of B r2 will react, because there is only 1 mole of I- left from previous reaction and from the stoichiometry data, 1 mole of Br2 reacts with 2 moles of I-.

Hence total quantity of Br2  present after all possible reactions = 0.5 mol

Hence last option should be correct


Related Solutions

From an initial mix of: 2 mol Cl2, 1 mol Br2, 1 mol I2, 1 mol...
From an initial mix of: 2 mol Cl2, 1 mol Br2, 1 mol I2, 1 mol Cl−, 1 mol Br−, & 5 mol I−; the total quantity of Br2  present after all possible reactions occur is 0 mol 1 mol 2 mol 0.5 mol
which reactions below will not occur? I2+KCl->2Kl+Cl2 I2+2NaBr->2Nal+Br2 both reactions will not occur
which reactions below will not occur? I2+KCl->2Kl+Cl2 I2+2NaBr->2Nal+Br2 both reactions will not occur
For the reaction Br2 (g) + Cl2 (g) → 2 BrCl Kp = 1.11 x 10-4...
For the reaction Br2 (g) + Cl2 (g) → 2 BrCl Kp = 1.11 x 10-4 at 150K. a) If 1.0 atm each of bromine and chlorine gas are placed in an otherwise empty 1 L container and allowed to equilibrate at a temperature of 150K, what will be the partial pressures at equilibrium of all three gases? Br2  atm Cl2  atm BrCl  atm b) suppose 0.2 atm each of all three gases are placed in a selaed container and allowed to equilibrate...
A sample of gas contains 0.1000 mol of HCl(g) and 5.000×10-2 mol of Br2(g) and occupies...
A sample of gas contains 0.1000 mol of HCl(g) and 5.000×10-2 mol of Br2(g) and occupies a volume of 4.79 L. The following reaction takes place: 2HCl(g) + Br2(g)2HBr(g) + Cl2(g) Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant. A sample of gas contains 0.1800 mol of HCl(g) and 9.000×10-2 mol of Br2(g) and occupies a volume of 9.74 L. The following reaction takes place: 2HCl(g) + Br2(g)2HBr(g)...
A proposed mechanism for the preparation of COBr2 from CO(g) and Br2 is: Br2 ⇄ 2...
A proposed mechanism for the preparation of COBr2 from CO(g) and Br2 is: Br2 ⇄ 2 Br (g) fast Br(g) + CO (g) ⇄ COBr fast COBr + Br2 → COBr2 + Br slow The correct rate law for this mechanism is: A. k [CO][Br2] B. k [CO] / [Br2]1/2 C. k[Br2] D. k [CO]2[Br2] E. k [CO][Br2]3/2
A mixture of 0.2063 mol of Cl2, 0.2093 mol of H2O, 0.1887 mol of HCl, and...
A mixture of 0.2063 mol of Cl2, 0.2093 mol of H2O, 0.1887 mol of HCl, and 0.09871 mol of O2 is placed in a 1.0-L steel pressure vessel at 575 K. The following equilibrium is established: 2 Cl2(g) + 2 H2O(g) 4 HCl(g) + 1 O2(g) At equilibrium 0.05821 mol of O2 is found in the reaction mixture. (a) Calculate the equilibrium partial pressures of Cl2, H2O, HCl, and O2. (b) Calculate KP for this reaction.
A.) Initially, 1.0 mol of H2 and 2.0 mol of I2 are placed into a 10.0...
A.) Initially, 1.0 mol of H2 and 2.0 mol of I2 are placed into a 10.0 L reaction flask. When equilibrium was established, the [HI] was 0.080 mol/L. Find the equilibrium concentrations of H2 and I2 and evaluate Kc for the following reaction: H2 (g)+ I2 (g) <--> 2HI (g) B.) The equilibrium constant for the reaction above is 45.0 at 490 C. What is the equilibrium concentration of each species if 1.0 mol of HI were put in a...
The reaction I2(g)+Cl2(g)⇌2ICl(g) (Kp = 81.9) is carried out at 25∘C with these initial partial pressures:...
The reaction I2(g)+Cl2(g)⇌2ICl(g) (Kp = 81.9) is carried out at 25∘C with these initial partial pressures: PI2 = 0.160 atm ,PCl2 = 0.160 atm ,PICl = 0.00 atm. Part B Find the equilibrium partial pressure of Cl2. Express your answer with the appropriate units.
a) The vibrational frequencies of F2, Cl2, Br2, and I2are 917 cm-1, 525 cm-1, 325 cm-1,...
a) The vibrational frequencies of F2, Cl2, Br2, and I2are 917 cm-1, 525 cm-1, 325 cm-1, and 208 cm-1. Which molecule (F2, Cl2, Br2, or I2) has the largest number of thermally accessible states? Make a prediction and explain your reasoning before you perform any calculations, but assume that all molecules are exposed to the same temperature. b) Treat the molecular vibrations as harmonic oscillators to calculate the vibrational partition function of the halogens and the population of their first...
In the reaction shown below, what species is oxidized? 2NaI + Br2 → 2NaBr + I2...
In the reaction shown below, what species is oxidized? 2NaI + Br2 → 2NaBr + I2 A) I– B) I2 C) Br2 D) Na+ E) Br–
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT