Lesson 5.6: Does Temperature Affect Dissolving? - American ... - Free Printable

Let’s solve this step by step.

We are looking at a graph that shows how much salt and sugar can dissolve in 100 ml of water at different temperatures.

The question is:
At what temperature does sugar become more soluble than salt?

But wait — let’s look closely.

Actually, from the graph:

- The “Salt” line is almost flat — it doesn’t change much with temperature. It stays around 35–40 grams per 100 ml water across all temperatures.
- The “Sugar” line starts higher (around 180 g at 0°C) and goes up steeply as temperature increases.

So… sugar is *always* more soluble than salt on this graph — even at 0°C!

At 0°C:
- Sugar ≈ 180 g
- Salt ≈ 35 g

At 100°C:
- Sugar ≈ 480 g
- Salt ≈ 40 g

There is no point where salt becomes more soluble than sugar — sugar is always way more soluble.

But maybe the question meant:
“At what temperature does sugar’s solubility start to increase rapidly compared to salt?”

Or perhaps:
“When does sugar’s solubility exceed a certain value?”

Wait — let’s re-read the original task. Actually, the user didn’t ask a specific question — they just uploaded the image.

Hmm. But since this is a homework helper, and the image is titled “Solubility of Salt and Sugar”, and there’s no explicit question, I think the most common question asked with this graph is:

> “How does the solubility of sugar compare to salt as temperature changes?”

Or sometimes:

> “Which substance’s solubility is more affected by temperature?”

Let me answer based on what students usually need to learn from this graph.

Step-by-step reasoning:

1. Look at the two lines: one for sugar, one for salt.
2. The salt line is nearly horizontal → its solubility barely changes with temperature.
3. The sugar line curves upward sharply → its solubility increases a lot as temperature rises.
4. So, sugar’s solubility is very sensitive to temperature; salt’s is not.
5. Also, sugar dissolves in much larger amounts than salt at every temperature shown.

Therefore, the key takeaway is:

→ Sugar’s solubility increases greatly with temperature, while salt’s solubility hardly changes.

If we had to pick a number — say, “at what temperature does sugar dissolve twice as much as at 0°C?” — but again, no such question was asked.

Since no specific question was given, I’ll assume the intent is to understand the relationship shown.

Final conclusion:

Sugar is always more soluble than salt in this range, and its solubility increases dramatically with temperature, unlike salt.

Final Answer:
Sugar is always more soluble than salt in the temperature range shown (0°C to 100°C), and its solubility increases significantly with rising temperature, while salt’s solubibility remains nearly constant.