a) Distinguish between a concentrated and a dilute solution? (3)
A pupil investigated the effect of temperature on the solubility of the salt ammonium chloride in water - Junior Cycle Science - Question Question 1 - 2007
Question Question 1
a) Distinguish between a concentrated and a dilute solution? (3)
A pupil investigated the effect of temperature on the solubility of the salt ammonium chloride in w... show full transcript
Worked Solution & Example Answer:a) Distinguish between a concentrated and a dilute solution? (3)
A pupil investigated the effect of temperature on the solubility of the salt ammonium chloride in water - Junior Cycle Science - Question Question 1 - 2007
Step 1
Distinguish between a concentrated and a dilute solution?
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Answer
A concentrated solution contains a lot of solute in a small amount of solvent (water). In contrast, a dilute solution contains a small amount of solute in a large volume of solvent (water). Concentrated solutions can often be made dilute by adding more solvent.
Step 2
Plot a graph of solubility against temperature in the grid below.
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Answer
To plot the graph:
Start by selecting suitable scales for both axes; for example, the temperature (°C) can range from 0 to 100 on the x-axis, and the solubility (g/100 g water) can range from 0 to 80 on the y-axis.
Plot the points given in the table:
(0, 29)
(20, 37)
(40, 46)
(60, 55)
(80, 66)
(100, 77)
Connect the points with a smooth line to visualize the trend in solubility with temperature.
Step 3
Use the graph to estimate the solubility of ammonium chloride at 70 °C.
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Answer
From the graph, estimate the solubility at 70 °C, which appears to be around 61 g/100 g water. Note that this estimate allows for slight variations, considering the scale.
Step 4
What conclusion about the solubility of ammonium chloride can be drawn from analysis of the graph?
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Answer
The solubility of ammonium chloride in water increases as the temperature rises. This indicates that higher temperatures enhance the solubility of this salt in water.
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