Indicator
Low pH color
High pH color
Gentian violet (Methyl violet 10B)
yellow
blue-violet
Leucomalachite green (first transition)
yellow
green
Leucomalachite green (second transition)
green
colorless
Thymol blue (first transition)
red
yellow
Thymol blue (second transition)
yellow
blue
Methyl yellow
red
yellow
Bromophenol blue
yellow
purple
Congo red
blue-violet
red
Methyl orange
red
yellow
Bromocresol green
yellow
blue
Methyl red
red
yellow
Methyl red
red
green
Azolitmin
red
blue
Bromocresol purple
yellow
purple
Bromothymol blue
yellow
blue
Phenol red
yellow
red
Neutral red
red
yellow
Naphtholphthalein
colorless to reddish
greenish to blue
Cresol Red
yellow
reddish-purple
Phenolphthalein
colorless
fuchsia
Thymolphthalein
colorless
blue
Alizarine Yellow R
yellow
red
and here is one you could test in your own garden
Hydrangea flowers
blue
pink to purple
It would indicate whether something is an acid or a base.
Its the other way around, hydrochloric acid is an example of a strong acid, whether dilute or otherwise. The strength of an acid is independent of its concentration.
Whether or not an acid is strong doesn't depend on concentration. Most definitions for acid strength depend on the acid dissociation constant (pKa). Strong acids are generally defined as those with a pKa less than -1.74. Since HCl meets this definition, it is a strong acid, regardless of concentration.
Different colors indicate different acidity levels. A deep pink/red is a strong acid and a deep blue is basic.
Strong acid is an expression in relation with the chemical properties of the acid and is used also in physical chemistry; dilute is a term only in relation with the concentration of the acid. Consequently strong acid and concentrated acid are not synonyms and a strong acid can be diluted.
The pH will depend on the concentration of the acid, not on whether it is strong or weak.
The pH will depend on the concentration of the acid, not on whether it is strong or weak.
It would indicate whether something is an acid or a base.
Its the other way around, hydrochloric acid is an example of a strong acid, whether dilute or otherwise. The strength of an acid is independent of its concentration.
Whether or not an acid is strong doesn't depend on concentration. Most definitions for acid strength depend on the acid dissociation constant (pKa). Strong acids are generally defined as those with a pKa less than -1.74. Since HCl meets this definition, it is a strong acid, regardless of concentration.
Different colors indicate different acidity levels. A deep pink/red is a strong acid and a deep blue is basic.
Strong acid is an expression in relation with the chemical properties of the acid and is used also in physical chemistry; dilute is a term only in relation with the concentration of the acid. Consequently strong acid and concentrated acid are not synonyms and a strong acid can be diluted.
Someone should not have placed carbonic acid in the mineral acid list. For your edification though, whether or not an acid is strong or weak has no bearing on whether or not it is a mineral acid or an organic acid. Mineral acid is any acid comprised of one or more inorganic compounds and dissociate into a hydrogen ion and conjugate base.
It's not possible to determine whether an acid or base is either strong or weak. The only way is to see it's concentration. To determine whether the liquid is an acid or base is easy. An acid's chemical formula always has Hydrogen ions. Example HNO3 or HCl. Bases always have OH or Hydroxide. Example NaOH2.
i thing strong acid
It is a strong acid.Actually it is very strong.
No, it is a weak acid. Sulfuric acid, however is a strong acid