which of the compounds are insoluble in water but are insoluble in 6M NaOH???

Answer 1

I would say all compounds insoluble in water are likely insoluble in NaOH as well. But you can experiment and find out.

Sodium Hydroxide (NaOH)

* Sodium hydroxide (NaOH) -

o Is usually dispensed as semi spherical pellets.

o Is a caustic substance and skin contact should be avoided.

o Is hydroscopic (ie will absorb water from the air when exposed).

This means that an accurate, dry weight is difficult to determine

o NaOH (sodium hydroxide), when exposed to the air, will react with the carbon dioxide in air, to form sodium carbonate (see equation).

This means that sodium hydroxide as a solid or in solution will loose its strength with time and degree of exposure and solutions of NaOH will need to be standardised.


* Sodium hydroxide (NaOH) ionises in water as shown by the following equation -

NaOH + H2O<=>Na++ OH- +H2O


This equation shows that in solution NaOH will release hydroxide ions (OH-).

The excess of OH- ions in solution causes that solution to be basic or alkaline and caustic.

Answer 2

Please restate the question.
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