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3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0 mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is left to react and then heated to remove any dissolved NH3, which is transferred to a flask containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization reaction. The HCl solution is then titrated to a methyl red endpoint using 11.74 mL of 0.251 M sodium hydroxide. a) How many grams of nitrate were in the original sample? Moles HCI: 0.989 MXOSL =0.0Smoles Moles of NaOH 0.2S0M x(II.74/1000)L = 0.003 Moles Moles of NH3=0.05-0.003 =0.047moles grams of Nitrogen =047 MolX17glmol = 0.8gm b) The first N-P-K fertitizer number represents percent nitrogen. Based on your answer, what is the percent nitrogen in the tested fertilizer sample?

3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0 mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is left to react and then heated to remove any dissolved NH3, which is transferred to a flask containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization reaction. The HCl solution is then titrated to a methyl red endpoint using 11.74 mL of 0.251 M sodium hydroxide. a) How many grams of nitrate were in the original sample? Moles HCI: 0.989 MXOSL =0.0Smoles Moles of NaOH 0.2S0M x(II.74/1000)L = 0.003 Moles Moles of NH3=0.05-0.003 =0.047moles grams of Nitrogen =047 MolX17glmol = 0.8gm b) The first N-P-K fertitizer number represents percent nitrogen. Based on your answer, what is the percent nitrogen in the tested fertilizer sample?

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter4: Reactions In Aqueous Solution
Section: Chapter Questions
Problem 71QAP: Calcium in blood or urine can be determined by precipitation as calcium oxalate, CaC2O4. The...
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3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0 mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is left to react and then heated to remove any dissolved NH3, which is transferred to a flask containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization reaction. The HCI solution is then titrated to a methyl red endpoint using 11.74 mL of 0.251 M sodium hydroxide. a) How many grams of nitrate were in the original sample? Moles HCI: 0.989 MXOSL =0.0Smoles Moles of NaOH 0.2S0M x(II.74/1000)L = 0.003 Moles Moles of NH 3=0.05-0.003 =0,047moles grams of Nitrogen = 047 MolX17glmol = 0.8gm b) The first N-P-K fertitizer number represents percent nitrogen. Based on your answer, what is the percent nitrogen in the tested fertilizer sample?
Transcribed Image Text:3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To test the nitrogen content, a 5.01 g sample of fertilizer is dissolved in 100.0 mL of water, and powdered aluminum and sodium hydroxide are added. The mixture is left to react and then heated to remove any dissolved NH3, which is transferred to a flask containing 50.0 mL of 0.989 M hydrochloric acid where it undergoes a neutralization reaction. The HCI solution is then titrated to a methyl red endpoint using 11.74 mL of 0.251 M sodium hydroxide. a) How many grams of nitrate were in the original sample? Moles HCI: 0.989 MXOSL =0.0Smoles Moles of NaOH 0.2S0M x(II.74/1000)L = 0.003 Moles Moles of NH 3=0.05-0.003 =0,047moles grams of Nitrogen = 047 MolX17glmol = 0.8gm b) The first N-P-K fertitizer number represents percent nitrogen. Based on your answer, what is the percent nitrogen in the tested fertilizer sample?
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