In one stage of the production of nitric acid, nitrogen oxide, NO, is reacted with oxygen to make nitrogen dioxide. Calculate the minimum volume of air, measured at room temperature and pressure, required to react with 1000 g nitrogen oxide to form nitrogen dioxide. Assume that the air contains 20% oxygen by volume. (relative atomic masses: N = 14, O = 16 , 1 mol of gas occupies 24 dm3 at room temperature and pressure) – 9041

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1. I started by recording the initial volume on the burette. Then, I opened the tap to let the acid flow into the flask containing the alkali. I swirled the flask to mix the solution. When the indicator changed colour, I closed the tap and noted the final volume of acid in the burette.

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