(a) Classify the following oxides as neutral, acidic, basic or amphoteric.

CO, B2O3, SiO2, CO2, Al2O3, PbO2, Tl2O3

(b) Write suitable equations to show their nature.

Asked by Abhisek | 11 months ago |  55

##### Solution :-

(a) CO (carbon monoxide) is a neutral compound. B2O3 is an acidic compound as it is acidic in nature it will react with base to form salt. When it reacts with NaOH it forms sodium metaborate.

$$B_{2}O_{3}+2NaOH\rightarrow 2NaBO_{2}+H_{2}$$

SiO2 is an acidic compound as it is acidic in nature it will react with base to form salt. When it reacts with NaOH it forms sodium silicate.

$$SiO_{2}+2NaOH\rightarrow 2Na_{2}SiO_{3}+H_{2}$$

CO2 is an acidic compound as it is acidic in nature it will react with base to form salt. When it reacts with NaOH it forms sodium carbonate.

$$CO_{2}+2NaOH\rightarrow Na_{2}CO_{3}+H_{2}$$

(b) Al2Ois an amphoteric compound because it can react with both acids and bases. The reaction with sodium hydroxide and sulfuric acid is given below:

$$Al_{2}O_{3}+2NaOH\rightarrow NaAlO_{2}$$

$$Al_2​O_3​+3H_2​SO_4​→Al_2​(SO_4​)_3​+3H_2​O$$

PbO2 is an amphoteric compound because it can react with both acids and bases. The reaction with sodium hydroxide and sulfuric acid is given below:

$$PbO_{2}+2NaOH\rightarrow Na_{2}PbO_{3}+H_{2}O$$

$$2PbO_2​+2H_2​SO_4​→2PbSO_4​+2H_2​O+O_2​$$

Tl2O3  is basic compound because it can react with acid to form salt. It can react with hydrochloric acid to form thallium chloride. The reaction is given below:

Being basic, it reacts with acids to form salts. It reacts with HCl to form thallium chloride.

$$Tl_{2}O_{3}+6HCL\rightarrow 2TlCl_{3}+3H_{2}$$

Answered by Pragya Singh | 11 months ago

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