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प्रश्न
Why the alkali is added drop by drop to the salt solution?
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उत्तर
If an alkali is added too quickly, then it is easy to miss a precipitate which redissolves in excess alkali.
संबंधित प्रश्न
State one relevant observation for the following.
Lead nitrate solution is treated with sodium hydroxide solution dropwise till it is excess.
Name a strong alkali.
Name the metal hydroxides which are :
(a) Insoluble (b) Soluble in
(i) Caustic soda solution (ii) Ammonium hydroxide solution.
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : ZnSO4
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO3)2
Fill in the blank.
The substance/s which react with hot conc. NaOH solution and undergoes a neutralization reaction ______ [Al2O3 / Al / Al(OH)3]
Choose the correct answer from the options given below :
Metal + alkali → salt + _________
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.
State your observation when zinc chloride solution, zinc nitrate solution, and zinc sulphate solutions are added individually to barium chloride solution.
Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
