lareynademividp0a99r
06.08.2019 •
Chemistry
Novelty devices for predicting rain contain cobalt (ii) chloride and are based on the following equilibrium and reacts to humidity as follows:
cocl2(s) + 6 h2o(g) « cocl2·6h2o(s) dh = +25.9 kj
what color will such an indicator be if rain is imminent?
(a) purple
(b) pink
(c) clear
(d) blue
(e) need the temperature to decide
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