Carbonic acid (h2co3) is a solution of carbon dioxide in water. molecules of carbonic acid are not stable. the mixture of carbon dioxide and water ionizes stepwise: co2 + h2o h+ + hco3- hco3- co32- + h+ use the equations to explain the process of dynamic equilibrium and the equilibrium constant. according to lechatelier’s principle, what do you think would happen if after beginning the reaction with carbon dioxide and water, more carbon dioxide molecules were added to the system.

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you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6