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Step 2: Solution A:

Picture of Solution A:
1. Mix 5 grams of Sodium Hydroxide in 1000 ml of water.

2. When thoroughly mixed & dissolved, pour some of this solution in a small (50 ml) beaker and add 0.1 grams of Luminol. Luminol is difficult to dissolve so to help, tilt the small beaker to one side so the Luminol powder sinks to one side. With a glass rod or popsicle stick, keep smashing the Luminol powder until it all goes into solution.

3. When the Luminol is finally dissolved, pour the contents of the small beaker into the rest of the Sodium Hydroxide solution. This is your completed 'Solution A'.