Just turn your screen to the side about 85°, presto chango its a square!

When water flashes to steam, it expands instantly to 1700 times its liquid volume. A single drop of water will explode when it comes into contact with strong acid, splashing the acid. The acid boils the drop of water instantly, from a liquid it expands as vapor explosively.

If you add water to acid, you get a bleve. It’s exothermic, the water flashes into steam and the acid can spatter from the explosion. I think thats right. I used to mix acid and water all the time. Ammonia and water is highly reactive as well, although NH3 is a gas. Really dangerous stuff.