`Cl_2O_7 , Na_2O ` which of these is amphoteric/base/acid/salt ?

(a). What are amphoteric oxides? Give two examples of amphoteric oxides. (b). Choose the acidic oxides, basic oxides and neutral oxids from the following: Na_(2)O,CO_(2),CO,SO_(2),MgO,N_(2)O,H_(2)O (c). Which of the following are amphoteric oxides: MgO,ZnO,P_(2)O_(3),Al_(2)O_(3),NO_(2)

The decomposition of Cl_2O_7 , at 400 K in the gas phase to Cl_2 and O_2 is a first order reaction : After 55s at 400 K the pressure of Cl_2O_7 falls from 0.062 to 0.044 atm. Calculate the rate constant.

Assertion (A): Potassium dichromate is preferred to Na_(2)Cr_(2)O_(7) for use in volumetric analysis (titrations) Reason (R): Na_(2)Cr_(2)O_(7) is hygroscopic whilst the K_(2)Cr_(2)O_(7) is not Which of the following is correct ?

Among (a) Na_(2)O (b) MgO , (c) Al_(2)O_(3) , (d) P_(2)O_(5) (e) Cl_(2)O_(7) the most basic, most acidic and amphoteric oxide can be

The decomposition of Cl_2O_7" at " 400 K in the gas phase to Cl_2 and O_2 is a first order reaction. After 50 seconds at 400 K, the pressure of Cl_2O_7 falls from 0.062 to 0.044 atm. Calculate the rate constant.

What are amphoteric oxides ? Choose the amphoteric oxides from the following: Na_2O, ZnO,Al_2O_3,CO_2,H_2O