Name a white insoluble oxide that dissolves when fused with caustic soda or caustic potash.

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Solution

A white insoluble oxide that dissolves when fused with caustic soda or caustic potash is Aluminium oxide, ${Al}_{2} O_{3}$ .
Aluminium oxide reacts with caustic soda to form $Al {(OH)}_{3}$ and ${Na}_{2} O$ .
Chemical equation:
${Al}_{2} O_{3} + 6 NaOH \to 2 Al {(OH)}_{3} + 3 {Na}_{2} O$

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Q2. A white insoluble oxide that dissolves when fused with caustic soda or caustic potash

name a white insoluble oxide that disolves when fused with caustic soda or caustic potash

Name:
(a) A yellow monoxide that dissolves in hot and concentrated alkali.
(b) A white insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Name:

(a) A yellow monoxide that dissolves in hot and concentrated caustic alkali.

(b) A white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Q2.

(a) Name a yellow monoxide that dissolves in hot and concentrated alkali. Give equation

(b) Name a white insoluble oxide that dissolves when fused with caustic soda or caustic potash.

(d) Identify the blue solution that turns deep blue on addition of excess of ${NH}_{4} OH$ .

(e) Name the hydroxide which is soluble in excess of ammonium hydroxide.

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Name a white insoluble oxide that dissolves when fused with caustic soda or caustic potash.

A white insoluble oxide that dissolves when fused with caustic soda or caustic potash is Aluminium oxide, Al2O3.Aluminium oxide reacts with caustic soda to form Al(OH)3 and Na2O.Chemical equation:Al2O3+6NaOH→2Al(OH)3+3Na2O

A white insoluble oxide that dissolves when fused with caustic soda or caustic potash is Aluminium oxide, ${Al}_{2} O_{3}$ .
Aluminium oxide reacts with caustic soda to form $Al {(OH)}_{3}$ and ${Na}_{2} O$ .
Chemical equation:
${Al}_{2} O_{3} + 6 NaOH \to 2 Al {(OH)}_{3} + 3 {Na}_{2} O$