# chemistry

posted by Tyler

A student adds .137 grams of nickel(II) hydroxide powder to 10.0 L of distilled water at 25C with vigorous stirring. Did all of the powder dissolve? If not, how much powder remains undissolved? If so, how much more powder can be dissolved before a saturated solution is reached? Thanks!

1. DrBob222

You need to look up the Ksp for Ni(OH)2, set up an ICE chart, determine the solubility of Ni(OH)2 and convert that to grams. That will give you the concn in 1L (the answer is is molar or moles/L), multiply by 10 to find the solubility in 10L. Determine how much remains undissolved and convert to volume required to dissolve the remainder. Post your work if you get stuck.

2. Tyler

Ok, I set up the ICE table and found that Ksp of Ni(OH)2 is 5.48x10E-16.
5.48x10E-16=4S3
S=5.16x10E-6 Molar

Now when you said convert this to grams I'm confused because the problem gives to the amount of grams used. I appreciate the help.

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