This experiment has involved the study of the variation of solubility of potassium hydrogen tartrate with ionic strength and also determine its thermodynamic solubility product. The background and procedure are given below as a guide in answering the questions:
Figure 1 (above): Background Theory
Figure 2 (above); Procedure for handling NaCl + KCl and KCl only
KCl Concentration (in M) | 0.01 M NaOH Added (in mL) |
0 | 46.2 |
0.025 | 34.1 |
0.05 | 19.3 |
0.10 | 15.5 |
0.20 | 8.3 |
0.30 | 5.5 |
NaCl + KCl Concentration (in M) | 0.01 M NaOH Added (in mL) |
0 | 35.1 |
0.025 | 24.2 |
0.05 | 20.4 |
0.10 | 14.1 |
0.20 | 8.2 |
0.30 | 6.2 |
Table 1: Obtained results from titration of KCl and NaCl+KCl
QUESTIONS:
A. From the titrations determine the molarity of
tartrate in solutions (c2) and hence the
mean ionic molarity where c1 is
the molarity of potassium chloride in solution.
B. Plot the square root of I (taking into account the potassium hydrogen tartrate in solution) against log c (ordinate). Extrapolate the line, determine Ks and hence at each ionic strength (Equation (8)).
C. For both series, plot the square root of I against log . Explain the results.
Organic compounds are often identified using spectroscopy. The process of testing compounds using spectroscopy is fairly simple (the compounds are placed into the machine and the read-out is printed). The difficult part comes in learning how to read the print-out and determining what it is telling you.
In infrared (IR) and nuclear magnetic resonance (NMR) spectroscopy, we identify the compound based on specific groups. Certain ranges of frequencies for each type of spectroscopy indicate different groups
This experiment has involved the study of the variation of solubility of potassium hydrogen tartr...
Determination of the Solubility Product Constant of an Organic Salt Prepurod by Judith C.Foster, Bosndoin College PURPOSE OFTHE EXPERIMENT Determine the solubility and solubility product constant of potassium hydrogen tartrate by titrimetry BACKGROUND INFORMATION A complete characterization of a chemical system involving substances dissolved in water includes studying the relevant equilibria. For the gene ralized chemical reaction aA +bBcC+ dD, the equilibrium constant expression is Eq.1 In the case of an acid salt, such as sodium hydrogen oxalate monohydrate (NaHC,0,-H,O)...
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