At what temperature does grape juice freeze at?

The freezing point of pure grape juice is approximately -12 degrees Celsius (10.4 degrees Fahrenheit).

Here's a more detailed explanation:

The freezing point of a liquid is the temperature at which it transitions from a liquid state to a solid state. It's important to note that the freezing point of a substance can vary depending on several factors, including its concentration, composition, and external pressure.

For pure grape juice, which typically consists of water, sugars (mainly glucose and fructose), acids, and other compounds, the freezing point is influenced by the concentration of dissolved solids. The higher the concentration of dissolved solids, the lower the freezing point. This means that grape juice with a higher sugar content will freeze at a lower temperature compared to grape juice with a lower sugar content.

The freezing point of pure grape juice (-12 degrees Celsius) is lower than the freezing point of water (0 degrees Celsius) because the dissolved solids in the grape juice act as solutes, causing the freezing point of the solution to decrease. As more sugar and other solids are added to the grape juice, the freezing point will continue to decrease.

It's worth noting that the freezing point of grape juice can also be affected by external pressure. At higher pressures, the freezing point of grape juice will be lower. This principle is sometimes utilized in the commercial production of frozen grape juice concentrates where high pressure is applied to lower the freezing point and allow for more efficient concentration processes.

In general, the freezing point of grape juice varies depending on the specific composition and conditions, but for pure grape juice, it is typically around -12 degrees Celsius.