How do kp and kc related

The R since we're dealing with pressure, would be equal to the value of the universal gas constant 0. So the atmosphere or the pressure.

Temperature, just like in all gas laws, needs to be in Kelvin and delta n stands for change in moles of gas. So remember, it's gas only, and so products minus reactants. So other things solids, liquids, they don't count.

It's only gas. 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. The relation between K p and K c is given by following simple derivation. To derive the relation between K p and K c, consider the following reversible reaction:.

K c is the equilibrium constant for a reversible reaction and it is given by,. Similarly, K p is the equilibrium constant in terms of atmospheric pressure and is given by the expression:. To derive relation between K p and K c, consider the ideal gas equation,.

P - Pressure of the ideal gas. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I'm not sure why these answers are correct. Disclaimer: The following information has been extracted from my own Chemistry lecture notes which was built on contributions from many other general chemistry textbooks.

Assuming that the gas behaves ideally a common and convenient assumption for general cases , we can write the ideal gas law for each gas such that. By visual inspection of your image, it is clear why these are the correct answers based upon the derived relationship offered here. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? 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. Write the K c for the reaction and state where the reaction is Homogeneous or Heterogeneous.