c) 12.44 M e) 35005 c) 5.31 a) 35.07 d: 3.97 e) 39.7 9. A solution has a pH of 4.67. What is the p H of the solution? a) 5.44 M b) 6.21 M 8.52 M d) 9.33M 10. Anti log of 1.545 is: b) 4.67 d; 350.07 11. What is the log of 9.333.45? a) 3.07 c) 3.73...
A 21.1 mL sample of 0.233 M triethylamine, (C,H3)2N, is titrated with 0.349 M nitric acid. After adding 5.85 mL of nitric acid, the pH is Use the Tables link in the References for any equilibrium constants that are required
26) If 250 mL of 4,00 M CaBr, is diluted to 1.60 L. the resulting solution contains A) 0.400 mole of CaBr B) 1,00 mole of CaBr C) 2.40 moles of CaBr D) 100 mole of CaBr E) 0.0500 moles of CaBr 27) If 850 mlL of 1.36 M NH CI is diluted to 4.50 L, the concentration of the...
The protein in foods is commonly determined by Kjeldahl titration. This involves three steps. First, the sample is digested with boiling sulfuric acid, which hydrolyzes the protein and converts the nitrogen from the protein into ammonium ions. protein + H2SO4 → NH4+ + other In the second step, the solution is made basic, which converts the ammonium ions to ammonia...
Working on the questions at the end of this lab report (see above). I need help answering questions 2, 3, and 4 completely and thoroughly. Thank you! s, until the I hexano 1 clean disti CYCLOHEXENE from CYCLOHEXANOL be dehydrated with solfuric acid to yield cyclohexene and waterf Add a 0°C (record ct and cal H,SO + H20 ainer. s...
Which of the following aqueous solutions are good buffer systems? . 0.27 M nitric acid + 0.20 M sodium nitrate 0.30 M ammonia + 0.30 M sodium hydroxide 0.34 M barium iodide + 0.28 M calcium iodide 0.19 M potassium hydroxide + 0.25 M potassium chloride 0.21 M hydrocyanic acid + 0.18 M potassium cyanide 0.16 M hydrocyanic acid +...
4. Suppose you titrate 50.00 mL of 1.20 M pyridine, C5H5N, with 0.634 M HCl. (a) How many moles of pyridine are present in the original pyridine solution? (b) What is the initial pH? (c) What volume (in mL) of HCl solution is required to reach the equivalence point? (d) What is the pH at the equivalence point? (e) What...
4. Suppose you titrate 50.00 mL of 1.20 M pyridine, C5H5N, with 0.634 M HCl. (a) How many moles of pyridine are present in the original pyridine solution? (b) What is the initial pH? (c) What volume (in mL) of HCl solution is required to reach the equivalence point? (d) What is the pH at the equivalence point? (e) What...
Solutions containing both Fe3+ and Al3+ can be selectively analyzed for Fe3+ by buffering to a pH of 2 and titrating with EDTA. The pH of the solution is then raised to 5 and an excess of EDTA added, resulting in the formation of the Al3+- EDTA complex. The excess of EDTA is then back titrated using a standard solution...