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Why is nitric acid stored in dark bottles?

HNO3 is stored in brown bottles because some compounds, in the presence of sunlight, may break down or react with other compounds. Under the action of light, nitric acid slowly decomposes into oxides of nitrogen plus free oxygen, which is why they are stored in brown bottles to prevent sunlight from reaching them.

Why do Mg and Mn react with HNO3?

Nitric acid or the HNO3 is one of the most strong acid which contain an oxygen molecule. Nitric acid only react with the manganese and magnesium to produce the hydrogen gas. Because,in the cases of the other metals, the oxygen molecule present in a nitric acid oxidizes the generated hydrogen gas into a water molecule.

Why is hydrogen gas not evolved when a metal other than Mg and Mn is treated with nitric acid?

Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because HNO3 is a strong oxidising agent. It oxidises the H2 produced to water and itself gets reduced to any of the nitrogen oxides (N2O, NO, NO2). But magnesium (Mg) and manganese (Mn) react with very dilute HNO3 to evolve H2 gas.

What gas is produced when lithium reacts with water?

hydrogen

Which gas is produced when sodium carbonate reacts with dilute hydrochloric acid?

carbon dioxide

What happens when dilute hydrochloric acid is added to sodium carbonate write a balanced chemical equation?

1 Answer. (a) When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide and water are formed. If excess of carbon dioxide gas is passed through the milky lime water, the solution becomes clear again. This confirms the presence of carbon dioxide gas.

What happens when dilute hydrochloric acid is?

(A) Hydrogen gas and iron chloride are produced. When dilute Hydrochloric acid is added to iron filings, iron(II) chloride & hydrogen gas is produced. In this reaction iron displaces hydrogen from hydrochloric acid to form iron chloride & hydrogen gas this reaction is a single displacement reaction.