Consider the reaction between nitric oxide and oxygen to form nitrogen dioxide. If 4 liters of nitrogen dioxide were formed, how many liters of nitric oxide and oxygen must have reacted?
|A||2 L of NO & 1 L of O2|
|B||2 L of NO & 2 L of O2|
|C||4 L of NO & 2 L of O2|
|D||2 L of NO & 4 L of O2|
According to the balanced equation, 2 liters of NO react with 1 liter of O2 to give 2 liters of NO2. According to the question, 4 liters of NO2 were formed. By taking proportionality, we can say that 4 liters of NO and 2 liters of O2 must have reacted so far.