KsP calculations with solubility values

[London Kngiths]

Maybe I am doing something horribly wrong here, but these numbers just make absolutely no sense to me.

We are given solubility values which will subsequently be used for Ksp calculations.

I was given hydrogen bromide and 5 solubility values (given in g/100g H2O)

Since 1g = 1mL basically we were given g/100mL.

To calculate Ksp we need mol/L so I converted. One value we were given was 193.8g/100mL

So first I converted to g/L by multiplying by 10. 1938g/L. Next I divided by the molar mass to get mol/L (80.91g/mol). This value ends up being 23.95mol/L which is a ridiculously high number. Did I do something wrong?

 

[Bystander]

"Ridiculous?" How many moles of water per liter (liquid)? Don't let your intuition stampede you --- when the numbers look "funny," check them, check your units, check you method, look at similar problems, and move on.

 

[M98Ranger]

It is possible that you made a mistake in your calculations, as the resulting Ksp value does seem quite high. It may be helpful to double check your conversions and make sure you are using the correct molar mass for hydrogen bromide. Additionally, it is important to consider the units when converting between grams and moles. Another possibility is that the solubility values given to you are incorrect. I would suggest double checking your work and possibly consulting with your instructor or classmates to see if they obtained similar results.