Which of the following reactions would not occur (→no reaction)?

li + hcl → ?

2cu + 4hcl → ?

2fe + 6hcl → ?

ca + 2hcl → ?

the second will not occure

2Cu + 4HCl

Explanation:

because cu come after Hydrogen H in the chemical activity series so it is less active than H .. it cannot substitute H in acids

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

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tony (lordcaos066)

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

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