Is HClO4 a strong or weak base?
| Strong Acids | Strong Bases |
|---|---|
| HCl (hydrochloric acid) HNO3 (nitric acid) HClO4 (perchloric acid) H2SO4 (sulfuric acid) | NaOH (sodium hydroxide) KOH (potassium hydroxide) Ca(OH)2 (calcium hydroxide) |
What color is a weak base?
Universal indicator
| pH range | Description | Colour |
|---|---|---|
| < 3 | Strong acid | Red |
| 3–6 | Weak acid | Orange or Yellow |
| 7 | Neutral | Green |
| 8–11 | Weak alkali | Blue |
How can you tell if an acid or base is strong or weak?
Key Takeaways
- Strong acids and bases are 100% ionized in aqueous solution.
- Weak acids and bases are less than 100% ionized in aqueous solution.
- Salts of weak acids or bases can affect the acidity or basicity of their aqueous solutions.
Why is HClO4 a strong acid?
First the H+ in HClO4 is not attached to Cl but O. Here the acidity of HClO4 is stronger than HCl due to the reason that [ClO4]- is more stable than Cl-. ( More electronegative O atom will pull electrons away from the O-H bond.)
Is perchloric acid a strong acid?
Perchloric acid is a corrosive inorganic liquid that is colorless, odorless, and oily in nature. A cold 70% aqueous perchloric acid solution is considered to be a strong acid or superacid (stronger than sulfuric and nitric acids) but is not necessarily a strong oxidizing agent.
What is the Colour of base?
When universal indicator is added to a solution, the color change can indicate the approximate pH of the solution. Acids cause universal indicator solution to change from green toward red. Bases cause universal indicator to change from green toward purple.
Does the color of a solution identify it as an acid or base?
Universal Indicator changes color when mixed with an acid or base. The Universal Indicator Color Guide shows that Universal Indicator turns red when it is added to a strong acid, it turns purple when it is added to a strong base, and it turns a yellowish-green when it is added to a neutral solution.
Is HClO4 a strong acid?
The 7 common strong acids are: HCl, HBr, HI, HNO3, HClO3, HClO4 and H2SO4 (1st proton only). This means the conj base of HCl, the Cl- anion, is an extremely weak base and in fact does not act as a base in water (gives a neutral solution).
What are strong acid and weak acid?
Strong acids are those that are completely ionized in body fluids, and weak acids are those that are incompletely ionized in body fluids.
Why HClO4 is stronger acid than HCl?
In Group 17 oxyacids, electron density is drawn away from the O atom as the electronegativity of the halogen increases. This in turn draws electron density away from the O–H bond and weakens it. The weaker the O–H bond, the stronger the acid.
Is HBr a weak acid?
Because HC 2H 3O 2 is a weak acid. Any chance a weak acid has to form, it will (the same with a weak base). As some C 2H 3O 2 − ions hydrolyze with H 2O to make the molecular weak acid, OH − ions are produced….11.5 Strong and Weak Acids and Bases and their Salts.
| Acids | Bases |
|---|---|
| HCl | LiOH |
| HBr | NaOH |
| HI | KOH |
| HNO 3 | RbOH |
Why is HClO4 the strongest acid?
Is a HClO an acid or a base?
HClO is an acid as is has the proton that it can donate but it is a weak acid because it is not one the acid amoung the list of the strong acids.
What are some examples of weak acids and bases?
Assume all other acids are weak unless told otherwise. Some weak acids: HF, HNO2, HClO2, [H2SO3] = SO2 + H2O, HC2H3O2 = HOAc All ionic hydroxides are strong bases, regardless of solubility. Bases that do not containOH– are weak. Some strong bases: LiOH, NaOH, KOH, RbOH, CsOH, Mg(OH)2, Ca(OH)2, Sr(OH)2, Ba(OH)2
Which of the following is a strong acid?
Strong and Weak Acids and Bases The following common acids are strong: HCl, HBr, HI, HNO3, HClO4, H2SO4 The following are some less common acids that are also strong: HClO3, HBrO3, HIO3, H2SeO4
Is NH3 a strong acid or base?
NH₃ , (CH₃)₂NH, and CH₃NH₂ are bases, despite not having OH⁻ groups, because they can accept H⁺, according to Bronsted-Lowry acid-base definition. With this information, we can classify the compounds from the list as a strong acid, strong base, weak acid, or weak base.