A sample of 299.5 mL of wet nitrogen gas was collected over water at a total pressure of 728 torr and a temperature of 21.0 °C. (The vapor pressure of water at 21.0 °C is 18.7 torr.) The nitrogen was produced by the reaction of sulfamic acid, HNH2SO3, with 364.6 mL of a solution of sodium nitrite according to the following equation. NaNO2 + HNH2SO3 N2 + NaHSO4 + H2O Calculate what must have been the molar concentration of the sodium nitrite.

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A sample of 299.5 mL of wet nitrogen gas was collected over water at a total pressure of 728 torr and a temperature of 21.0 °C. (The vapor pressure of water at 21.0 °C is 18.7 torr.) The nitrogen was produced by the reaction of sulfamic acid, HNH2SO3, with 364.6 mL of a solution of sodium nitrite according to the following equation.

NaNO2 + HNH2SO3 N2 + NaHSO4 + H2O


Calculate what must have been the molar concentration of the sodium nitrite.

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