What must be added to the solution before silver nitrate when testing for halides?

Dilute nitric acid must be added to the solution before silver nitrate when testing for halides.

Explanation:

For acidification nitric acid must be added!

The reaction gives a confusing precipitate + Silver nitrate.

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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)

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.