A 25.190 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 74.348 g of water. A 10.405 g aliquot of this solution is then titrated with 0.1058 M HCI. It required 28.58 ml. of the HCI solution to reach the methyl red endpoint. Calculate the weight percent NH, in the aqueous waste. wt% NH, !!

Fundamentals Of Analytical Chemistry
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Chapter13: Titrations In Analytical Chemistry
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A 25.190 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 74.348 g of
water. A 10.405 g aliquot of this solution is then titrated with 0.1058 M HCI. It required 28.58 ml. of the HCI solution to reach
the methyl red endpoint. Calculate the weight percent NH, in the aqueous waste.
wt% NH,
%3D
Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid-base titrations. If 19.15 ml.L NAOH is required
to neutralize 0.427 g KHP, what is the concentration of the NaOH?
M
concentration:
Transcribed Image Text:A 25.190 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 74.348 g of water. A 10.405 g aliquot of this solution is then titrated with 0.1058 M HCI. It required 28.58 ml. of the HCI solution to reach the methyl red endpoint. Calculate the weight percent NH, in the aqueous waste. wt% NH, %3D Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid-base titrations. If 19.15 ml.L NAOH is required to neutralize 0.427 g KHP, what is the concentration of the NaOH? M concentration:
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