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Chem

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acids and bases

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Chem

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  1. A C I D & BA SE S Submitted To : Ram Prakash Tiwari Submitted By : Priyanka Srivastava Course             :  B.Tech-C.S-D.S-A.I Roll No.           : 202010101150042

  2. ARRHENIUS CONCEPT Acids : They are substance that produces protons (H+) by itself or when dissolved in water. Base : They are substance that ionises itself or in water to produce Hydroxide ion(OH-).

  3. STRENGTH OF ACIDS & BASES  Strong Acid : A Strong Acid produces large concentration of H+ ions in its aqueous solution. Eg. : HCl, H2SO4. Weak Acid : They yield low H+ concentrations Eg. HCN, Oxalic acid are Weak Acids. Strong Base : If it dissociates extensively in aqueous solution to produce hydroxide ions.    Eg. NaOH  Weak Base : If it ionises slightly Eg., Ammonium hydroxide, Ca(OH)2 etc.

  4. BRONSTED-LOWRY CONCEPT An acid is a donor of proton or H+, while a base is an acceptor of proton.

  5. CONJUGATE ACID & BASE When an acid donates a proton, the portion of acid that remains is the CONJUGATE-BASE of the acid. When a base accepts a proton, the entity so- produced, is the CONJUGATE-ACID of the base.

  6. AMPHOTERIC COMPOUNDS If a chemical entity can behave both as an Acid & Base, the entity is called as amphoteric.  Example : Water which shows dual Acid-Base character is amphoteric.

  7. STRENGTH OF ACID & BASES The stronger the Acid, the weaker is its Conjugate Base. The stronger a Base is, the weaker is its Conjugate Acid.

  8. LEWIS CONCEPT A Lewis Acid : Any entity which can accept a pair of electrons to form covalent bonds is an Acid. A Lewis base is an electron pair donor. 

  9. STRONG ACID VS WEAK ACID

  10. STRENGTH OF ACID

  11. THANK YOU

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