1. what is acid?
2. what is alkali?
3. What characteristics of solutions differentiate them as acidic or alkaline?
4. What is meant by pH scale? What it is used for? Give examples
(i need simple answers, so simple answers are highly appreciated)
thank you!
Answers
Answer:
1. Acid, any substance that in water solution tastes sour, changes the colour of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical reactions (acid catalysis).
2.A compound with particular chemical properties including turning litmus blue and neutralizing or effervescing with acids; typically, a caustic or corrosive substance of this kind such as lime or soda.
3.Bases Feel Slimy, Acids Make Gas
The solution feels slippery or slimy to the touch because the alkaline solution is combining with the fatty acids on your fingers. An acidic solution doesn't feel slimy, but it will make bubbles if you immerse metal in it.
4.ph scale used to specify the acidity or basicity of an aqueous solution. ... At 25 °C, solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic
Answer:
1.acid means solutions which has H+ ions and it's pH is less than 7
4.pH scale is scale that whish tells that solutions are acidic , basic or neutral