If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M nitric acid to a methyl red endpoint,what is the molarity of the base? NH₄OH(aq)+ HNO₃(aq)→ NH₄NO₃(aq)+ H₂O(l)

Question

Quizplus · Accepted Answer

The balanced chemical equation is:NH₄OH(aq) + HNO₃(aq) → NH₄NO₃(aq) + H₂O(l)From the stoichiometry of the balanced equation, we can see that 1 mole of NH₄OH reacts with 1 mole of HNO₃.Therefore, the number of moles of NH₄OH in the sample is equal to the number of moles of HNO₃ used in the titration.The number of moles of HNO₃ used in the titration is:0.025 L × 0.200 M = 0.005 molTherefore, the number of moles of NH₄OH in the sample is also 0.005 mol.The molarity of the NH₄OH solution is:0.005 mol / 0.050 L = 0.100 MTherefore, the correct answer is A) 0.100 M.

If a 500 ML Sample of Ammonium Hydroxide Is Titrated with 25