You make a saturated solution of NaCl at 25 °C. No solid is present in the beaker holding the solution. What can be done to increase the amount of dissolved NaCl in this solution? (See Figure 13.11.) (a) Add more solid NaCl. (b) Raise the temperature of the solution. (c) Raise the temperature of the solution, and add some NaCl. (d) Lower the temperature of the solution, and add some NaCl. Figure 13.11 The temperature dependence of the solubility of some ionic compounds in wafer. The solubility of most ionic compounds increases with increasing temperature This is illustrated using NH 4 CI (ports b and c).
You make a saturated solution of NaCl at 25 °C. No solid is present in the beaker holding the solution. What can be done to increase the amount of dissolved NaCl in this solution? (See Figure 13.11.) (a) Add more solid NaCl. (b) Raise the temperature of the solution. (c) Raise the temperature of the solution, and add some NaCl. (d) Lower the temperature of the solution, and add some NaCl. Figure 13.11 The temperature dependence of the solubility of some ionic compounds in wafer. The solubility of most ionic compounds increases with increasing temperature This is illustrated using NH 4 CI (ports b and c).
You make a saturated solution of NaCl at 25 °C. No solid is present in the beaker holding the solution. What can be done to increase the amount of dissolved NaCl in this solution? (See Figure 13.11.)
(a) Add more solid NaCl.
(b) Raise the temperature of the solution.
(c) Raise the temperature of the solution, and add some NaCl.
(d) Lower the temperature of the solution, and add some NaCl.
Figure 13.11 The temperature dependence of the solubility of some ionic compounds in wafer. The solubility of most ionic compounds increases with increasing temperature This is illustrated using NH4CI (ports b and c).
Draw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant
rate under these conditions, check the box underneath the drawing area instead.
Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products.
Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but
strong heat or reflux is not used.
Cl
Substitution will not occur at a significant rate.
Explanation
Check
:☐
O-CH
+
Х
Click and drag to start
drawing a structure.
Draw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant
rate under these conditions, check the box underneath the drawing area instead.
Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products.
Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but
strong heat or reflux is not used.
Cl
C
O Substitution will not occur at a significant rate.
Explanation
Check
+
O-CH3
Х
Click and drag to start
drawing a structure.
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