Write the equilibrium expression Qc for the following:
3CIO2-(aq)<-->2CIO3-(aq)+Cl-(aq)
Choices:
3[CIO2-]/2[CIO3-][Cl-]
2[CIO3-][Cl-]/3[CIO2-]
[CIO2-]^3/[CIO3-]^2[Cl-]
[CIO3-]^2[Cl-]/[CIO2-]^3
I don't even know where to start with this one can you help please.
Thanks andy
Can you write Keq? Qc is done the same way.
Dr Bob
NO I don't know how too do Keq..
Can you give me some starts on this problem please.Thanks andy
Keq = (products)^x/(reactants)^y
It's the concn of the products divided by the products of the concn of the reactants, and raise each concn to the power indicated by the coefficients in the balanced equation. For the reaction
2A + 3B = C + 3D, Keq is
Keq = (C)(D)^3/(A)^2(B)^3
is the above equation balanced?
3CIO2-(aq)<-->2CIO3-(aq)+cl-
if not how do you balance it (I suck at this)
thanks Andy
Of course, Andy! I'll help you determine the equilibrium expression Qc for the given reaction. The equilibrium expression is an expression that describes the concentrations of products and reactants at equilibrium. It is written using the stoichiometric coefficients of the balanced equation.
In this case, we have the reaction:
3CIO2-(aq) <--> 2CIO3-(aq) + Cl-(aq)
The equilibrium expression Qc is expressed as the ratio of product concentrations to reactant concentrations, with each concentration raised to the power equal to its stoichiometric coefficient.
So, let's set up the equilibrium expression using the given choices:
Choice 1: 3[CIO2-]/2[CIO3-][Cl-]
Choice 2: 2[CIO3-][Cl-]/3[CIO2-]
Choice 3: [CIO2-]^3/[CIO3-]^2[Cl-]
Choice 4: [CIO3-]^2[Cl-]/[CIO2-]^3
To determine the correct equilibrium expression, we need to consider the stoichiometric coefficients of the reactants and products. Looking at the balanced equation, we can see that the stoichiometric coefficients in front of each species are 3, 2, and 1, respectively.
Comparing the choices with the stoichiometric coefficients, we see that for the reactant CIO2-(aq), choice 3 has the correct coefficient of 3. For the product CIO3-(aq), choice 4 has the correct coefficient of 2. For the product Cl-(aq), choice 4 has the correct coefficient of 1.
Therefore, the equilibrium expression Qc for the given reaction is:
[CIO3-]^2[Cl-]/[CIO2-]^3
I hope this explanation helps you understand how to determine the equilibrium expression! Let me know if you have any further questions.