How does kc related to kp

So let's take a look at our example here. So we have example is N2O4 gas yields 2NO gas. We are given the Kc and we're also given the temperature. So all we do is plug it in. Then R is 0. K and then the times and then the temperature needs to be in Kelvins.

So 25 plus is Kelvin. Then delta n, how many moles? So we have 2 moles in the products, one mole of gas in the reactants, so 2 minus 1 is 1. So that's to the first part. So you do the math and you calculate Kp. So in this example, Kp is equal to 0. So some tips and tricks is that when delta n equals 0, that means that Kp will equal Kc.

When are Kp and Kc values equal? Ask Question. Asked 4 years, 9 months ago. Active 2 years, 7 months ago. Viewed 50k times. Improve this question. Ray Ruiz Ray Ruiz 1 1 gold badge 1 1 silver badge 5 5 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. In order for that to happen, you need to have equal numbers of moles of gas on the reactants' side and on the. Now, before looking at how many moles of gas you have present on each side of the equilibrium, you need to make.

The third equilibrium cannot match this criterion, since you only have moles of gas on the products' side. Chemistry Chemical Equilibrium Equilibrium Constants.

Stefan V. As for K p , it is the same as K c , but instead of brackets [ ], K p uses parentheses :. For example:. The value of K depends on whether the solution being calculated for is using concentrations or partial pressures. The color of an equilibrium mixture of these 2 gasses depends on their relative proportions, which are dependent on temperature. If a problem asks you to find which way the reaction will shift in order to achieve equilibrium, and K is given, you would have to calculate for Q and compare the two numbers.

When comparing K and Q:. See Relationship Between K and Q for more information. A mixture of hydrogen, iodine, and hydrogen iodide, each at 0. Therefore, more HI will be produced.