Greeting everyone, I am doing my assignment and I am really stuck in 1 question and my teacher does not give an appropriate answer. Maybe one of you know the answer to this:
Discuss the importance of changing pH to alter solubility such as going down the hydroxides of Group 1 or 2.
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- Thread Starter
- 12-01-2017 12:17
- 13-01-2017 02:27
I do not know offhand tbh, but we can probs work it out:
In Group 1, going downwards, you have Li, Na K. these have one electron in outer shell, which they can lose to produce "one plus" cations: Li+, Na+, K+. Ok - now as the atoms become larger, i.e. going down the group, the electron is further from the central nucleus, so less attraction, so more easily lost. At lower pH i.e. when the proton (H+) concentration is higher, what would we expect? Ok - first, to dissolve, the atom has to ionise......
sorry now struggling to keep eyes open