Baking soda is sodium bicarbonate or sodium hydrogen carbonate It is alkaline and will therefore turn universal indicator purple or blue
blue
Universal indicator changes to green when sodium bicarbonate is added.
Sodium bicarbonate would turn blue or purple in universal indicator solution, indicating a basic pH level, around pH 9-10.
When bicarbonate of soda is added to universal indicator, it typically turns the solution a blue or purple color. This indicates a basic pH level.
Green is the color that universal indicator turns to when it is neutral.
The universal indicator turns red in acidic solutions.
it is clear.
purple
Alkalis turn universal indicator blue or purple.
Universal indicator turns shades of blue or purple in an alkali.
The universal indicator in saliva typically appears green or blue in color.
if oxygen present the colour of bicarbonate indicator will change to brown like in my experiment,i think it's not fully successful but not dissapoint me.