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magnesium and manganese
Mg(s) + 2 HNO3(aq) → Mg(NO3)2(aq) + H2(g)
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Why hydrogen is liberated when magnesium react with dilute nitric acid unlike other metals where hydrogen is not evolved?
This may due to Magnesium metal has high reactivity and concentration of nitric acid is dilute, thus magnesium reacts with H+ in water/ in nitric acid to give hydrogen
Why most metal do not displace hydrogen from nitric acid?
Nitric acid is an oxidizing agent
Why nitric acid does not liberate hydrogen gas with most metals?
It is because HNO3 is a strong oxidising agent.So as soon as H2 is formed in the reaction between a metal and dilute nitric acid oxidises this hydrogen to water.
Why is nitric acid in the dilute form not used in the laboratory preparation of hydrogen from metals?
It is because nitric acid is a strong oxidising agent (because it decomposes to yield nascent oxygen as:2HNO3 →2NO2 + H2O + [O])and it oxidises the hydrogen formed to water.Only 1% dilute and cold nitric acid reacts with magnesium and manganese to liberate Hydrogen gas.
Which of the following metals reacts with dilute nitric acid?
zinc and copper
Why hydrogen is liberated when magnesium react with dilute nitric acid unlike other metals where hydrogen is not evolved?
This may due to Magnesium metal has high reactivity and concentration of nitric acid is dilute, thus magnesium reacts with H+ in water/ in nitric acid to give hydrogen
Why most metal do not displace hydrogen from nitric acid?
Nitric acid is an oxidizing agent
Why nitric acid does not liberate hydrogen gas with most metals?
It is because HNO3 is a strong oxidising agent.So as soon as H2 is formed in the reaction between a metal and dilute nitric acid oxidises this hydrogen to water.
Which of the following metals reacts with dilute nitric acid?
zinc and copper
Why is nitric acid in the dilute form not used in the laboratory preparation of hydrogen from metals?
It is because nitric acid is a strong oxidising agent (because it decomposes to yield nascent oxygen as:2HNO3 →2NO2 + H2O + [O])and it oxidises the hydrogen formed to water.Only 1% dilute and cold nitric acid reacts with magnesium and manganese to liberate Hydrogen gas.
What gas is evolved when dilute nitric acid is added to Zinc?
hydrogen
What metals cannot displace hydrogen gas from a dilute acid?
all those metals which are present below Hydrogen in the reactivity series like Ag , Cu , Au , Pt ,etc. ^^ He is incorrect. All metals, one or another, will react with some acids to produce Hydrogen Gas. -He mentioned Copper and Silver. Silver and Copper will react with Nitric Acid giving off Hydrogen and NitroDioxide Gas. He mentioned Gold and Platinum. Gold and Platinum will react with Aqua Regia (A mixture of Hydrogen Chloride and Nitric Acid) giving off Nitric Oxide, Nitrogen Dioxide, and Hydrogen gas. All metals will react with FluoroAntimonic Acid, Xenic Acid, or any other super acid to give off hydrogen gas and other gases as well.
What is the reaction between metals and dilute nitric acid?
If the metal is higher in the electromotive series than hydrogen gas, this gas will evolve and the metal will become a nitrate salt.
What happens when aluminium reacts with dilute nitric acid?
Aluminium reacts with dilute nitric acid to give aluminium nitrate and hydrogen gas. aluminium + nitric acid -> aluminium nitrate + hydrogen 2Al(s) + 6HNO3 (aq) -> 2Al(NO3)3 (aq) + 3H2(g)
Why metals except Mg and Mn do not form hydrogen when they react with nitric acid?
The question needs an opposite answer:Most metals, except some noble ones like Pt, Au and maybe Hg or Ag, can NOT resist the oxidation power of nitric acid. This is because of the high oxidation power (potential) of nitric acid (even dilute acid is very potent).
What is the reaction between lead and dilute nitric acid?
lead(II) nitrate and hydrogen gas
What gas is formed when dilute nitric acid reacting with magnesium?
Magnesium will react with nitric acid and most other acids to produce hydrogen gas.
