How do I tackle Kc questions?

I like to use something called the ICE method:I = initial moles C = Change in molesE = equilibrium moles once you draw the ICE table with the formula on top you simply fill in the blanks. Now remember, in terms of change for products it will always be adding on and for reactants it will always be taking away because in any reaction the reactants decrease and products increase. Finally you must divide all your values by the volume to get concentration as this is what goes into the Kc formula, which is products over reactants. And molecule with a big number in front, will go to the power of that number once in the formula. Once you calculate that it’s simply about getting your units which you can mimic your formula to calculate.

Answered by Chemistry tutor

2433 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

How does a catalyst and increasing temperature affect the rate of reaction?


Why is phenylamine a weaker organic base than ethylamine?


What is the difference between benzene and cyclohexene?


A 1000 cm3 container of ammonia (NH3) has a mass of 20.7g, it is stored at room temperature (298 K). When empty the container has a mass of 20.0 g, calculate the pressure inside the container in kPa to an appropriate number of significant figures.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning