homework 12.25

[alexis castro 1B]

Calculate the initial molarity of Ba(OH)2 and the molarities of Ba2, OH, and H3O in an aqueous solution that contains 0.43 g of Ba(OH)2 in 0.100 L of solution.

Can someone tell me how i would set this problem up? i thought i would use ICE box but I am not sure.

[Chem_Mod]

It is a strong base. Therefore no ICE box needed.

Ba(OH)2 is 100% dissociated

Ba(OH)2 ---> Ba²⁺ + 2 ^-OH

First calculate moles of Ba(OH)2 given the mass Ba(OH)2.
Then divided moles by the volume.

Now you have Ba(OH)2 concentration. For every one mole Ba(OH)2 there are two moles ^-OH.
Therefore multiply Ba(OH)2 concentration by 2.

See the example I worked through in class on page 150.