[wilson]

If I have a bicarbonate in aqueous solution (i.e. dissolved) and solid, left at RTP for quite some time--will it spontaneously form its respective carbonate + water + carbon dioxide? I know the decomposition reaction will take place at elevated temperatures like 100C. But what about RTP?

And just to check another thing--Are the colours of solid barium bicarbonate and solid silver bicarbonate both white? I know this is quite a trivial question, but I need to know it, and I do not have the reagents at hand now.

[DevaDevil]

a quick forum search would have leaded to this thread

and as for stability: it is in equilibrium, decomposition takes place, but also the forming of bicarbonate from carbon dioxide dissolved in the water does. These reactions have equal rates at equilibrium.
At elevated temperatures the decomposition will go much faster, and the carbon dioxide formed then will not stay dissolved in the water, but escape into the air.

[wilson]

But there is no information in that thread?
Silver bicarbonate is ? colour.
Barium bicarbonate is ? colour.
Lead bicarbonate is ? colour.

Back to the stability of the bicarbonate--What is the equilibrium like? Is it almost completely bicarbonate at RTP?