To determine which of the samples most likely had the lowest solubility, we need to consider the relationship between temperature and the solubility of gases in water. Specifically, the solubility of a gas in water typically decreases as the temperature increases. Therefore, the sample with the highest temperature will generally have the lowest solubility.
Let's examine the given table of temperatures for each sample:
[tex]\[
\begin{array}{|c|c|}
\hline
\text{Sample} & \text{Temperature of water} \left({ }^{\circ} C \right) \\
\hline
1 & 78 \\
\hline
2 & 73 \\
\hline
3 & 55 \\
\hline
4 & 63 \\
\hline
\end{array}
\][/tex]
By looking at the temperatures:
- Sample 1: 78°C
- Sample 2: 73°C
- Sample 3: 55°C
- Sample 4: 63°C
We can see that Sample 1 has the highest temperature at 78°C. Because solubility decreases with increasing temperature, Sample 1 is most likely to have the lowest solubility.
Therefore, the sample most likely to have the lowest solubility is Sample 1.
