To prepare methylene blue indicator mix together some methylene blue with a naproxen solution. Then dilute with distilled water. If you would like your mixture to have a deeper blue color then add some juice from boiled cabbage.
To prepare bromocresol green indicator, dissolve 0.1 g of bromocresol green in 100 mL of ethanol. For methyl red indicator, dissolve 0.1 g of methyl red in 100 mL of ethanol. Store both indicators in a tightly sealed container away from light.
To prepare methyl orange indicator for titration, dissolve 0.1g of methyl orange powder in 100mL of distilled water. This will give you a 0.1% solution of methyl orange which is suitable for use as an indicator in acid-base titrations.
To prepare screened methyl orange indicator, dissolve 0.05g of methyl orange powder in 100 mL of distilled water. Filter the solution through a filter paper to remove any particles. The resulting solution is ready for use as a screened methyl orange indicator.
Adding phenolphthalein indicator to hydrochloric acid (HCl) will turn it red in basic solutions.
Alkalis turn methyl orange indicator yellow because the color of methyl orange changes depending on the pH of the solution. In acidic conditions, methyl orange appears red, while in alkaline conditions it appears yellow.
To prepare bromocresol green indicator, dissolve 0.1 g of bromocresol green in 100 mL of ethanol. For methyl red indicator, dissolve 0.1 g of methyl red in 100 mL of ethanol. Store both indicators in a tightly sealed container away from light.
Methyl red is used as a pH indicator or for the identification of some bacteria.
To prepare methyl orange indicator for titration, dissolve 0.1g of methyl orange powder in 100mL of distilled water. This will give you a 0.1% solution of methyl orange which is suitable for use as an indicator in acid-base titrations.
To prepare screened methyl orange indicator, dissolve 0.05g of methyl orange powder in 100 mL of distilled water. Filter the solution through a filter paper to remove any particles. The resulting solution is ready for use as a screened methyl orange indicator.
Methyl red is an adequate indicator.
The solution of NaOH in methyl orange indicator will turn from yellow to red. Methyl orange is an acid-base indicator that changes color in response to a change in pH. In the presence of a strong base like NaOH, the indicator will change to a red color indicating the basic nature of the solution.
Adding phenolphthalein indicator to hydrochloric acid (HCl) will turn it red in basic solutions.
Adding 6 M HCl (hydrochloric acid) lowers the solution's pH, causing a shift in methyl red's equilibrium towards the red form. This is because methyl red is a pH indicator that changes color from yellow (at a higher pH) to red (at a lower pH). The addition of acid protonates the indicator, resulting in the color change.
Alkalis turn methyl orange indicator yellow because the color of methyl orange changes depending on the pH of the solution. In acidic conditions, methyl orange appears red, while in alkaline conditions it appears yellow.
Methyl Orange is red in an acidic solution.
Phenolphthalein Litmus Red Litmus Blue Universal Indicator -> Most Common Methyl Orange :)
By titration with alkaline on methyl-red indicator (pH<6)