One way to isolate metals from their ores is by a chemical reaction of the metal oxide with carbon as shown below (M = metal) :
$2 \mathrm { MO } ( s ) + \mathrm { C } ( s ) \rightarrow 2 \mathrm { M } ( s ) + \mathrm { CO } _ { 2 } ( g )$ If 31.75 g of a metal oxide reacts with excess carbon to form 4.07 L of CO₂ at 100°C and 1.50 atm, what is the identity of the metal?

Question

One way to isolate metals from their ores is by a chemical reaction of the metal oxide with carbon as shown below (M = metal) :

2 \mathrm { MO } ( s ) + \mathrm { C } ( s ) \rightarrow 2 \mathrm { M } ( s ) + \mathrm { CO } _ { 2 } ( g )

If 31.75 g of a metal oxide reacts with excess carbon to form 4.07 L of CO₂ at 100°C and 1.50 atm, what is the identity of the metal?

Quizplus · Accepted Answer

The volume of CO2 can be used to find the moles of CO2 using the ideal gas law. Then, using stoichiometry, the moles of metal can be determined. The molar mass of the metal can be calculated and compared to the given options. The calculations show that the metal is copper (Cu).

One Way to Isolate Metals from Their Ores Is by a Chemical