0
The choice is minimal for pH value that high:
- 1,3,5, trinitrobenzene: colorless 12.0 <-> 14.0 orange
- alizerineYellow-R : fine yellow 10.1 <--> 12.0 blueish violet
- (thymolphtalein pH values: colorless 9.3 <-> 10.5 blue)
Wiki User
∙ 14y ago
Wiki User
∙ 6y agoExamples are: neutral red, naphtolphthalein, cresol red, phenol red, bromothymol blue.
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Phenolphthalein solution is used as an indicator of acids and bases. If added to an ammonia-based solution of window cleaner we would expect the solution to turn?
As ammonia solution is alkaline, about pH 11 - 12, the phenolphthalein will turn pink.
How are universal indicators useful to scientist?
An Universal Indictator is more helpful because it shows the exact amount of acidity. Other indictators (example the red and blue litmus) just indicates whether or not the solution is acidic. The universal indicator gives you a specific color to which you can match a pH number therefore, telling you how acidic the soultion is.
Why is the universal indicator better than other indicators?
Because universal shows how strong or weak a substance is. Litmus just shows if its Alkaline or Acid. ps a 12 yr old wrote this.
How do you calculate dilutions?
H! Refer below to the formula of dilution: C1V1 = C2V2 Sample problem: How much water and how much 12 M HCl must be used to prepare 500 ml of a 1 M HCl solution? # Determine the volume of 12 M to be used using the dilution formula (12) (volume of 12 M) = (1) (500) volume of 12 M = (1) (500) / 12 = 41.7 ml 12 M # Determine the volume of water to add to it Total volume after dilution = volume of 12 M + volume of water added 500 = 41.7 + volume of water added 500 - 41.7 = volume of water = 458.3 ml of water to be added to the 41.7 ml of 12 M Regards, Dianne
12ml of alcohol mixed with water and find out the value of water its mixture composition is 12 percent?
the mixture composition is 12% that means in 100 ml of solution 12 ml is alcohol and when u are taking of 12 ml of alcohol then rest i.e. 88 ml is water
How many gallons of a 12 percent indicator solution must be mixed with a 20 percent indicator solution to get 10 gallons of a 14 percent solution?
10 gallons..
Phenolphthalein solution is used as an indicator of acids and bases. If added to an ammonia-based solution of window cleaner we would expect the solution to turn?
As ammonia solution is alkaline, about pH 11 - 12, the phenolphthalein will turn pink.
What colour is it when you put universal indicator into pure water?
Water is the main neutral* solution. The colour would be green and is 7 on the pH scale.** *Neutral - A term indicating that a substance is neither acidic nor alkaline. (pH7) ** pH Scale - scale which usually runs from 0 to 14 and measures the acidity or alkalinity of a solution. Ross Atkinson 9Y @ LGS (12) AND HIS BUDDY: Mostyn Davies @ KFA (11)
Is a water solution of pH 12 dangerous to the skin?
yes
Is clay in water a solution?
Anaceli Solis L0ve Jose Sanchez12/12/11 Best relationship
Who would you prepare 2.6L of a 1200 solution given 12 percent solution sterile water?
pharmacist
How are universal indicators useful to scientist?
An Universal Indictator is more helpful because it shows the exact amount of acidity. Other indictators (example the red and blue litmus) just indicates whether or not the solution is acidic. The universal indicator gives you a specific color to which you can match a pH number therefore, telling you how acidic the soultion is.
Why is the universal indicator better than other indicators?
Because universal shows how strong or weak a substance is. Litmus just shows if its Alkaline or Acid. ps a 12 yr old wrote this.
How much water must be added to 12 grams of a 90 percent iodine solution to produce a 25 percent iodine solution?
12*(90%)=10.8=X*.25 10.8/.25=X=43.2 43.2-12=31.2 31.2 grams of water must be added
How much water must be added to 12 L of a 40 percent solution of alcohol to obtain a 30 percent solution?
4 litres
Which group above 9-12 reacts with water to yield alkaline solution?
These are the alkali metals.
How do you calculate dilutions?
H! Refer below to the formula of dilution: C1V1 = C2V2 Sample problem: How much water and how much 12 M HCl must be used to prepare 500 ml of a 1 M HCl solution? # Determine the volume of 12 M to be used using the dilution formula (12) (volume of 12 M) = (1) (500) volume of 12 M = (1) (500) / 12 = 41.7 ml 12 M # Determine the volume of water to add to it Total volume after dilution = volume of 12 M + volume of water added 500 = 41.7 + volume of water added 500 - 41.7 = volume of water = 458.3 ml of water to be added to the 41.7 ml of 12 M Regards, Dianne
