Hydrogencarbonate solution would turn yellow when pondweed is exposed to light and begins photosynthesizing. This indicates the production of oxygen gas as a result of photosynthesis.
The Universal Indicator would go green which is pH 7.
Litmus paper would turn blue when dipped in an aqueous solution of aspirin, indicating the solution is basic. aspirin is a weak acid and when dissolved in water, it undergoes hydrolysis releasing hydroxide ions which makes the solution basic.
The color change that occurs when iodine solution is added to starch is a dark blue or purple color. This reaction is commonly used to test for the presence of starch in a solution.
I think it is supposed to be PURPLE. Because of the following:It turns red when placed in acidic solutionIt turns blue when placed in alkaline solutionAnd purple when placed in neutral.
Milk of magnesia is a basic solution. Therefore, methyl orange shows a yellowish orange colour. Further, this indicator shows a red colour in acidic solutions.
Luckily we both have the same assignment but I'll help you out here :P, The solution would turn yellow since oxygen raises the pH level of the solution and the oxygen is obviously produced via photosynthesis though I am not sure whether it can be performed in the solution but yeah :) hope that helps :)
It would start off red i know & i think would turn yellow
a really concentrated solution would undergo a reaction quiet dramatically. the colour of the solution would be darker
Blue
Blue litmus paper turns red in an acidic solution.
Phenolphthalein would turn pink in a borax solution, indicating the solution is basic. Borax acts as a weak base in solution and would cause phenolphthalein to change color due to its alkaline nature.
The color of a solution containing H2O and ZnCl2 would likely be clear or colorless. Both water and zinc chloride are transparent substances, so the solution would not exhibit a distinct color.
There is no reason to start with any particular colour. The solution you are reading would work equally well starting with any colour.
The Universal Indicator would go green which is pH 7.
The red petal indicator would likely turn blue in a solution of sulphuric acid because sulphuric acid is a strong acid that would cause the indicator to change color.
Carbonated water is a solution of carbonic acid. This exists as an equilibrium mixture of H2CO3 molecules, solvated hydrogen ions and solvated carbonate and hydrogencarbonate ions, so a simple formula is not possible. H2CO3(aq) is probably the best approximation.
Universal indicator added to a toothpaste solution would likely turn a shade of blue or purple, indicating that the solution is basic due to the presence of substances like fluoride or calcium carbonate found in toothpaste.