The reaction of bromine with an alkene such as cyclopentene is a good laboratory

Question

The reaction of bromine with an alkene such as cyclopentene is a good laboratory test for the presence of a double bonding a compound What type of reaction is it? addition elimination substitution displacement reduction A 1. 25 M solution of the weak acid HA is 9. 2% dissociated. What is the pH of the solution? 0. 64 0. 94 1. 13 2. 16 none of the above The equilibrium constant, Kp, for the reaction CO(g) + H2O(g) CO2(g) + H2(g) at 986 degree C is 0. 63. A rigid cylinder at that temperature contains 1. 2 atm of carbon monoxide, 0. 20 atm of water vapor, 0. 30 atm of carbon dioxide, and 0. 27 atm of hydrogen. Is the system at equilibrium? Yes. No, the forward reaction must proceed to establish equilibrium. No, the reverse reaction must proceed to establish equilibrium. Need to know the volume of the container before deciding. Need to know the starting concentrations of all substances before deciding.

Explanation / Answer

9)
it is (a) addition reaction.

10)
[H+] = 0.092*1.25 = 0.115 M

pH = -lon([H+]) = 0.94

option(b)

11)

KP = ([CO2][H2])/([CO][H2O])

put values

you will get KP = 0.3375 which is not equal to 0.63

as the instanteneous value of Kp is less than the equilibrium, forward reaction must take place to establish equilibrium.

option(b) is correct

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