Suppose we have two hypothetical reactions below: A + B = C + D K1 = 10 C + D =

Question

Suppose we have two hypothetical reactions below:

A + B = C + D K1 = 10

C + D = E + F K2 = 100

The combined reaction of the two reactions above becomes ___________. Let the equilibrium constant of the combined reaction be K3. What is K3 equal to ____________ ?

Suppose we have two hypothetical reactions below:

A     +     B     =    C     +    D            K1 = 8

A + B =    E     +     F            K2 = 2

Manipulation of the two reactions above becomes Blank 1. Let the equilibrium constant of the resulting reaction be K3. What is K3 equal to Blank 2?

An acid dissociation (hydrolysis) takes the following reaction pattern:

Acid    + H2O   =   H3O+    +    Conjugate Base    

For example, the dissociation of CH3COOH is presented as

CH3COOH  + H2O =   H3O+   +    CH3COO-   

If you write down the dissociation (hydrolysis) reaction of HCN, it is presented as Blank 1.

Explanation / Answer

Combined reaction becomes:

A + B = E + F

K3 = K1*K2 = 10*100 = 1000

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Combined reaction becomes:

2A + 2B = C + D + E + F

K3 = K1*K2 = 8*2 = 16

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Dissociation reaction of for HCN is as follows:

HCN + H2O ---> H3O+ + CN-

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