Grade 9Physical Chemistry
How can we determine by seeing the formula that this is Lewis acid???
How can we determine by seeing the formula that this is Lewis acid???
1 Answer
Arun
You can urself identify it by analysing the molecular formula of the compound :
I will begin with simple molecules:
I will begin with simple molecules:
- Acids produce H+ and base produce OH- (as suggested by Bronsted and Lowry)
- So the substance like HCl they produce H+ so its an acid.
- H2SO4 will produce 2H+ & SO4^2- (sulpahte ion) so this one is also a acid. Similarily HNO3 and HNO2 , H2CO3 all are acids.
- Now NaOH , KOH they all produce OH- ion And Na+ or K+ as ions so they are base.
- Now organic acids (weak acids ) contain -COOH group in them so they are acidic.
- U can easily identify them by seeing their formula like CH3COOH is ethanoic acid bcoz it contains COOH (carboxylic ) group which will ionize as COO- and H+
- Those u give electron are Lewis base and those which accept e- are Lewis acid.
- For example AlCl3 is not having any H+ or OH- to identify but its a electron deficient compound according to octet rule so it accepts e- thus its a lewis acid.
- NH3 it looks as if this ammonia molecule will donate this H in the form of H+ but actually this molecule donates lone pair of e- on it so behaves as Lewis base.
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago