KOH -------------> K⁺ + OH⁻
pOH = - log [ OH⁻ ]
pOH = - log [ 1 x 10⁻⁵ ]
pOH = 5
pH + pOH = 14
pH + 5 = 14
pH = 14 - 5
pH = 9
hope this helps!
Answer: Correct option is 3.
Explanation: Properties of Acid:
- They are liquids.
- Acids are the ones which donate hydrogen ions to the solution.
- They turn blue litmus paper to red.
- They are corrosive in nature.
- They are sour in taste. For example: vinegar
From the above properties written, it can be said that option 3 is correct.
<span>H3PO4 --> H+ + H2PO4 1-
H2PO4 1- --> H+ + HPO4 2-
HPO4 2- --> H+ + PO4 3-
Ka1 = [H+][H2PO4 1-] / [H3PO4]
Ka2 = [H+][HPO4 2-] / [H2PO4 1-]
Ka3 = [H+][PO4 3-] / [HPO4 2-</span>
When two substances at different tempeartures como into contact, the substance that is at higher temperature will transfer energy, in the form of heat, to the substance that is at lower temperature, until their temperatures get equal.
In this case, if the two substances are isolated of the rest of the universe, the law of conservation of energy states tha the heat released by the substance initially at higher temperature is the same amount of heat gained by the substance originally at lower temperature.
Only CH3OH contains convalent bonds. Others are metal. But CH3OH is methanol.