Consider the reaction represented by the equation fe3 scn...

Name: consider the reaction represented by the equation fe3 scn fescn2 600m fe3 and 100m scn are mixed at a certain temperature and at equilibrium the concentration of fescn2 is 400m what is the value for t
Uploaded: 2022-06-01T01:21:58-08:00
Duration: 3 min 57 s
Channel: Dominique Jan Tan
Description: consider the reaction represented by the equation fe3 scn fescn2 600m fe3 and 100m scn are mixed at a certain temperature and at equilibrium the concentration of fescn2 is 400m what is the value for t

Consider the reaction represented by the equation: Fe3+ + SCN- <-> FeSCN2+ 6.00M Fe3+ and 10.0M SCN- are mixed at a certain temperature and at equilibrium the concentration of FeSCN2+ is 4.00M What is the value for the equilibrium constant for this reaction?

Transcript

00:01 Equilibrium constant is the ratio of the equilibrium concentration of the product to that of the reactant.

00:07 In this problem, we're given with an equilibrium reaction involving iron 3 with thiosionate to form iron thiosyanate.

00:16 In this problem, specifically we are given that initially that the concentration of the reactants are 6 and 10 molar.

00:25 So that's 6 for f .a.

00:26 3 plus and 10 for s.

00:28 C and minus.

00:29 And we want to find the equilibrium constant, kc, if it is given that at equilibrium, the concentration of the product is for molar.

00:40 So let us start by establishing the expression for kc.

00:45 So as has been said, this is the ratio of the concentrations at equilibrium of the product, which is f -e -s -c -n -2 -plus, and the concentration of the reactants.

00:59 So there are two reactants, what we will do is to multiply their equilibrium concentrations as shown here.

01:06 Now in case the reaction shows coefficients for this species, so we will deal with those coefficients by raising the concentrations by the respective coefficients.

01:20 But as we can see here, the coefficients are one for each of this, and so each of this equilibrium concentration is raised by one.

01:29 Moving on, let's find the concentration or the change in the concentration.

01:37 So as the reaction proceeds, let us say that x -molar of the reactants react to form x -molar of the product.

01:47 So we have them here negative for x and negative x for both reactant because of the fact that their concentration will decrease...

Question

Consider the reaction represented by the equation: Fe3+ + SCN- <-> FeSCN2+ 6.00M Fe3+ and 10.0M SCN- are mixed at a certain temperature and at equilibrium the concentration of FeSCN2+ is 4.00M What is the value for the equilibrium constant for this reaction?

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