Quadratic

[605110118]

What do you do if the after using the quadratic equation and you get two positive answers?

[Morgan Carrington 2H]

You would test each value with the equilibrium expression that was found using the ICE table to see if the value is reasonable. Usually one of the values found using the quadratic equation will cause one of the concentrations to be negative, which is not possible.

[BritneyP- 2c]

You should test each value, and rule out the one that is unreasonable in the situation. Usually you will end up with a positive and negative number, so it can immediately rule out.

[Sally Qiu 2E]

i don't think you would get 2 positive answers often, but just in case i'd plug the values back into the ICE table to see which value is more reasonable

[Max Madrzyk Dis 4G]

I think the chances that you would get two positive values after using the quadratic equation are pretty low but if you do I would plug them back into the ICE table and see which value is more reasonable.

[Betania Hernandez 2E]

If you get two positive answers, you could rule out the value that is greater than your initial concentration since it would result in a negative number when plugged in to the equilibrium expression.

[Ruby Richter 2L]

If you do the quadratic equation and get a positive and negative number would you just discredit the negative number? Why?

[CynthiaLy4F]

If you use the quadratic formula and get two positive answers, you would choose the answer where if you subtract it from any of the initial conditions given it would be result in a reasonable and nonnegative concentration or pressure.

[705121606]

You would use the number that is less than your initial concentration you were given in the original problem.

[805373590]

You will test out the two answers and the answer that is less than the initial answer will be the correct one

[Amanda Mei 1B]

If you do the quadratic equation and get a positive and negative number would you just discredit the negative number? Why?

Because you can't have a negative concentration