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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
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 amphoteric oxide
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
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : CuSO4
What is the reaction of freshly precipitated aluminium hydroxide with caustic soda solution? Give equation.
Fill in the blank.
The hydroxide which is soluble in excess of NaOH is _________ [Zn(OH)2 / Fe(OH)3 / Fe(OH)2].
Fill in the blank.
To distinguish soluble salts of zinc and lead ______ [NaOH / NH4OH]can be used.
Choose the correct answer from the options given below :
Metal + alkali → salt + _________
Choose the correct answer:
The metal oxide which can react with acid as well as alkali is:
