I'm trying to do a gender reveal Memorial Day weekend using the Elephant Toothpaste experiment. I have 30% H2O2 and KI. I did an initial test run using the below quantities:
Reaction Bottle (20oz gatorade bottle):
1 Cup H2O2
Generous squirt of liquid dish soap
5 drops red food coloring
1/3 cup water
1/2 teaspoon KI
While the reaction worked, it was a bit underwhelming. The reaction had the below issues:
1. Initially the resulting bubbles were brown in color. I'm assuming it was the KI and water catalyst reacting without the benefit of the food coloring since the color changed after a few seconds (i do need to add a lot more drops of food coloring i think since the foam wasn't as dark as I'd like). Would it be better to add coloring to the catalyst mixture or to try to quickly shake/mix the reaction bottle after the catalyst is added?
2. I didn't get the "explosive" fountain of bubbles i was hoping for. I did get a generous amount of foam, though it just kinda gently flowed up and out of the bottle. Do i just need to add more KI to the Catalyst bottle to speed up the reaction? Use less water in the Catalyst bottle? Or a combination of the two? How much KI should I use?
I only have a limited quantity of raw materials (2 - 500ml bottles of 30% H2O2 and 30 grams of KI) so can't do too many "trial and error" test runs. My first test used ~half a bottle of H2O2 and it took a week to ship so ordering more will be pricey and cut it close to reveal day.
Any insight and advice is appreciated.