Select appropriate graphical presentations. Choose an appropriate graphical form for each of the following examples: (a) A titration curve showing the influence of \(0.1 \mathrm{M} \mathrm{NaOH}\) on \(\mathrm{pH}\) following the addition of \(0.1 \mathrm{M} \mathrm{HCl}\) (b) The concentration of lead in blood from 100 children. (c) The determination of selenium in bread flour. (d) The sand, silt and clay content of a soil sample. (e) A quality control chart for the paracetamol content of tablets.

Short Answer

Expert verified
The appropriate graphs for each situation would be: (a) Line graph, (b) Histogram or Box plot, (c) Bar graph, (d) Pie chart or Stacked bar chart, (e) Control chart (Shewhart chart).

Step by step solution

01

Determine Graph type for (a)

A titration curve is usually represented in the form of a line graph plotting pH (on the y-axis) against volume of titrant added (x-axis) This gives a visual representation of how the pH changes as the titrant is added. For this situation, a line graph would be the best fit.
02

Determine Graph type for (b)

The concentration of lead in blood from 100 children is data that could be represented as a histogram or a box plot. These forms of graphs are often used to show the distribution of a dataset and provide a summary of the dataset in terms of median, quartiles and extremes.
03

Determine Graph type for (c)

The determination of selenium in bread flour could be depicted using a bar graph. Bar graphs are useful for comparing quantities, in this case the amount of selenium, across different categories, in this case different types of bread flour.
04

Determine Graph type for (d)

The sand, silt and clay content of a soil sample could be depicted as a pie chart or stacked bar chart. This would effectively show the proportion each component (sand, silt, and clay) contributes to the total sample.
05

Determine Graph type for (e)

A quality control chart for the paracetamol content of tablets should ideally be depicted as a control chart (also known as Shewhart chart). Control charts are used to study how a process changes over time and are most commonly used to monitor quality.

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Most popular questions from this chapter

Create a pie chart. Display the following information in the form of a pie chart. Typical composition of a breakfast cereal. $$ \begin{array}{ll} \hline \text { Content } & \text { Typical value per } \mathbf{1 0 0} \mathbf{~ g} \\ \hline \text { Protein } & 6 \mathrm{~g} \\ \text { Carbohydrate } & 83 \mathrm{~g} \\ \text { Fat } & 5 \mathrm{~g} \\ \text { Fibre } & 4 \mathrm{~g} \\ \text { Other } & 2 \mathrm{~g} \\ \hline \end{array} $$

Create a frequency distribution histogram. The table below gives data for the fructose concentration in 100 samples of fruit juice. Plot a histogram showing the frequency distribution of the data. Write a brief description of the important features of the distribution. $$ \begin{aligned} &\text { Fructose content }\left(g L^{-1}\right) \text { in fruit juice }\\\ &\begin{array}{|r|r|r|r|r|r|r|r|r|r|} \hline 11.1 & 14.2 & 13.5 & 9.8 & 12.0 & 13.9 & 14.1 & 14.6 & 11.0 & 12.3 \\ \hline 13.4 & 12.9 & 12.9 & 10.0 & 13.1 & 11.8 & 12.6 & 10.7 & 8.1 & 11.2 \\ \hline 13.8 & 12.4 & 12.9 & 11.3 & 12.7 & 12.4 & 14.6 & 15.1 & 11.2 & 9.7 \\ \hline 11.3 & 14.7 & 10.8 & 13.3 & 11.9 & 11.4 & 12.5 & 13.0 & 11.6 & 13.1 \\ \hline 9.3 & 13.5 & 14.6 & 11.2 & 11.7 & 10.9 & 12.4 & 12.0 & 12.1 & 12.6 \\ \hline 10.9 & 12.1 & 13.4 & 9.5 & 12.5 & 11.6 & 12.2 & 8.8 & 10.7 & 11.1 \\ \hline 10.2 & 11.7 & 10.4 & 14.0 & 14.9 & 11.5 & 12.0 & 13.2 & 12.1 & 13.3 \\ \hline 12.4 & 9.4 & 13.2 & 12.5 & 10.8 & 11.7 & 12.7 & 14.1 & 10.4 & 10.5 \\ \hline 13.3 & 10.6 & 10.5 & 13.7 & 11.8 & 14.1 & 10.3 & 13.6 & 10.4 & 13.9 \\ \hline 11.7 & 12.8 & 10.4 & 11.9 & 11.4 & 10.6 & 12.7 & 11.4 & 12.9 & 12.1 \\ \hline \end{array} \end{aligned} $$

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