Name the metal hydroxides which are soluble in caustic soda solution.

One Line Answer

Zn(OH)₂, Pb(OH)₂

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Action of Alkalis on Certain Metals

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Chapter 4 Analytical Chemistry
lntext Questions | Q 4. (b) (i) | Page 66

When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H⁺, h₃O⁺, OH^-)

Choose the most appropriate answer from the following list of oxides which fit the description.

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

An oxide which dissolves in water forming an acid

A compound X (having vinegar like smell) when treated with ethanol in the presence of the acid Z, gives a compound Y which has a fruity smell.

The reaction is: \[\ce{C2H5OH + X ->[Z] Y + H2O}\]

Name two colourless metal ions.

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : FeCl₃

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO₃)₂

Name: A weak alkali.

Name: Two bases which are not alkalis but dissolve in strong alkalis.

Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Choose the correct answer from the options given below :
Metal + alkali → salt + _________