Calcium reacts with water. this reaction is represented by the balanced equation below. the aqueous product of this reaction can be heated to evaporate the water, leaving a white solid, ca(oh)2(s).
ca(s) + h2o(l) ==> ca(oh)2(aq) + h2(g)
compare the electrical conductivity of the aqueous product in the reaction to the electrical conductivity of the white solid that remains after the water is evaporated from the solution.
write the chemical name of the base produced in the reaction.
state one change in reaction conditions that will increase the rate of the reaction.

- Calcium is more conductive than calcium hydroxide.

- Calcium hydroxide.

- Addition of more either calcium or water to the reaction vessel

Explanation:

Hello,

In this case, based on the given reaction and information, calcium's electrical conductivity 0.298 106/(cm*Ω) which is a relatively high value compared to it its base has due to its large insolubility.

In addition, the name of the formed base is calcium hydroxide based on the IUPAC rules.

Moreover, the addition of more either calcium or water to the reaction vessel will generate more calcium hydroxide.

Best regards.

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

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