What is the reaction between Cu and HNO3?
Nitric acid reacts with copper according to the reaction: 4 HNO3(l) + Cu(s) ==> Cu(NO3)2(s and aq) + 2 NO2(g) + 2 H2O(l) The copper nitrate salt that forms is a deep blue color. The nitrogen dioxide is a maroon vapor. Place the copper disk in the bottom of the glass cylinder.
What is the balanced equation of Cu HNO3?
balance Cu + HNO3 -> Cu(NO3)2 + NO2 + H2O – Wolfram|Alpha.
What is the half reaction of Cu?
half reaction here tells you that solid copper (Cu(s)) is being oxidized, losing an e-, to form the copper ion with a plus two charge (Cu+2). The e- means that there is a free electron with a negative charge which can reduce some other species in the next half reaction.
What happens when Cu reacts with cold dilute HNO3?
When copper is reacted with cold, dilute nitric acid it yields copper nitrate, water, and nitric oxide. And again it undergoes a reaction with air, which is nitric acid reacts with oxygen and gives nitrogen dioxide. Nitrogen dioxide is a poisonous brown gas with an irritating odor. So the answer is nitrogen dioxide.
Why does copper only react with nitric acid?
It is because copper cannot displace the hydrogen atom from the acid.
What happens when Cu reacts with hot & conc hno3?
Talking about the reaction between copper and nitric acid, copper is oxidized by concentrated nitric acid to produce \[C{u^{2 + }}\] ions. The nitric acid is reduced to form nitrogen dioxide which is a poisonous brown gas with an irritating odour. Also, Cupric nitrate, \[Cu{(N{O_3})_2}\] is formed in this reaction.
What is the half equation for copper?
Copper is less reactive than hydrogen, so copper (Cu) is produced at the negative electrode. The half equation is: Cu2+ + 2e- → Cu The hydroxide ion is more reactive than the sulphate ion, therefore this forms water (H2O) and oxygen at the positive electrode.
Does Cu dissolve in HNO3?
Copper dissolves in nitric acid because the reaction at the cathode now involves the reduction of nitric acid to NO gas, and the potential for this half-reaction is strong enough to overcome the half-cell potential for oxidation of copper metal to Cu2+ ions.
What type of reaction is Cu 4hno3 → Cu NO3 2 2no2 2H2O?
The copper goes from a charge of zero to a charge of +2 and was oxidized. The nitrogen goes from +5 to +4 and was reduced. The second is a double replacement reaction. The third is an acid/base neutralization reaction which is a type of double replacement reaction.
