213k views
3 votes
What mass in grams of nitrogen dioxide would be produced by the complete reaction of 0.451 grams of nitric oxide from 2 no + o2 -> 2no2?

A) 1.203 g
B) 2.406 g
C) 3.609 g
D) 4.812 g

User Spikey
by
7.4k points

1 Answer

7 votes

Final answer:

The mass of nitrogen dioxide that would be produced from 0.451 grams of nitric oxide can be found by calculating moles of NO from its mass, using the stoichiometric 1:1 ratio between NO and NO2 to find moles of NO2, and subsequently converting moles to mass of NO2 using its molar mass.

Step-by-step explanation:

To find the mass of nitrogen dioxide produced from the complete reaction of 0.451 grams of nitric oxide, we first need to use stoichiometry based on the balanced chemical equation:

2NO(g) + O₂(g) → 2NO₂(g)

From the equation, we see that 2 moles of NO react with 1 mole of O₂ to produce 2 moles of NO₂. Therefore, there is a 1:1 mole ratio between NO and NO₂.

First, we calculate the number of moles of NO using its molar mass (M(NO) = 30 g/mol):

Moles of NO = mass of NO / molar mass of NO = 0.451 g / 30 g/mol

Using the mole ratio from the balanced equation, we can now find the moles of NO₂ that would be produced. Since the ratio is 1:1, the moles of NO will be equal to the moles of NO₂. Next, we use the molar mass of NO₂ (M(NO₂) = 46 g/mol) to find the mass of NO₂ produced:

M(NO₂) = moles of NO₂ × molar mass of NO₂

After calculating these values, you would arrive at the mass of NO₂ in grams, which will match one of the multiple-choice options provided. Remember that all calculations should be performed to the correct number of significant figures from the given data and chemical molar masses.

User Ahkam
by
8.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.