Some chemical changes can be reactive through another chemical change?
Answer:
Redox reaction and single displacement
Explanation:
This reaction is first of all a redox reaction. A redox reaction is a reaction that involves both oxidation and reduction. Oxidation involves increase in oxidation number while reduction involves decrease in oxidation number.
Copper (Cu) had an oxidation number of "0" as a reactant but had an oxidation number of "2+" in the product [Cu(NO₃)₂] hence oxidation occurred.
Nitrogen (N) had an oxidation number of "5+" in the reactant (HNO₃) but had an oxidation number of "4+" in the product (NO₂) hence reduction also occurred.
Also, from the reaction, it can be deduced that copper (Cu) displaced hydrogen (H) from the nitric acid (HNO₃) solution to form copper (II) nitrate [Cu(NO₃)₂]. It should be noted that copper can displace hydrogen because it is higher than hydrogen in the electrochemical series. Hence, this reaction can also be called a single displacement reaction. A single displacement reaction is a reaction in which an atom of an element replaces another atom in a compound (as seen in the equation given in the question).
Either B or C
Explanation ;
From the given balanced reaction equation:
we can see that every 1 mole of NH4NO2 will produce 1 mole of N2 and when the water also on the gas phase so, every 1 mole of NH4NO2 will produce 3 moles of gas
now we need to get number of moles of NH4NO2 = mass/molar mass
when the mass = 32 g and the molar mass of NH4NO2 = 64 mol/g
∴moles of NH4NO2 = 32 g / 64 mol/g = 0.5 mole
so, the moles that produced of gas will be = 3 * 0.5 = 1.5 moles
now, we can use the ideal gas formula to get V:
PV = nRT
when P is the pressure = 1.5 atm
n is the number of moles = 1.5 moles
R is the ideal gas constant = 0.0821 L*atm/mol*K
and T is the temperature in Kelvin = 525 °C + 273 = 798 K
so by substitution:
1.5 atm * V = 1.5 moles * 0.0821 * 798 K
∴ V = 65.5 L