If you titrate the water with 40M HCl then decrease the temperature to -4 degrees F you can neutralize the solution with household bleach (NaClO). When the base completely neutralizes the acid, the reaction heats the water up to 0 degrees F, and it will promptly freeze.
Or you could put a glass of water in the freezer.
Water freezes at 32 degrees
32 Degrees Fahrenheit 0 Degrees Celsius
Celsius: no, it boils Degrees: frozen solid
Water freezes at 32 degrees Fahrenheit, so the water would have to be 32 degrees cooler on the Fahrenheit scale in order to freeze.
32 degrees Fahrenheit
Water starts to freeze at 32 degrees Fahrenheit or 0 degrees Celsius.
32 degrees Fahrenheit or 0 degrees Celsius
At 0 degrees Celsius and 32 degrees Fahrenheit.
32 degrees
Water
Water freezes at 32 degrees Fahrenheit (°F).
32 degrees32 degrees