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प्रश्न
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
Pb(NO3)2
Write balanced equation for this reaction.
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उत्तर
\[\ce{Pb(NO3)2 + 2NaOH -> \underset{\text{White ppt.}}{Pb(OH)2↓} + \underset{\text{colourless}}{2NaNO3}}\]
In excess of alkali, white precipitate of Pb(OH)2 becomes soluble :
\[\ce{Pb(OH)2 + 2NaOH(excess) ->\underset{\text{Sodium Plumbate (colourless)}}{Na2PbO2 + 2H2O}}\]
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संबंधित प्रश्न
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
FeCl3
Write a balanced equation for this reaction.
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
ZnSO4
Write a balanced equation for this reaction.
Distinguish by adding:
(a) sodium hydroxide solution and
(b) Ammonium hydroxide solution to
(i) Calcium salt solution and lead salt solution
(ii) Lead salt solution and ferrous salt solution
(iii) copper salt solution and ferrous salt solution
(iv) Fe (II) salt solution and Fe (III) Salt solution
(v) Ferrous nitrate and lead nitrate
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- adding ammonium hydroxide to each portion in turn till it is in excess.
Write the observation, and balanced equation for the following reaction:
Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess.
Choose the correct answer from the options given below :
Hydroxide of this metal is soluble is sodium hydroxide solution
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State your observation of the following case :
When excess sodium hydroxide is added to calcium nitrate solution
What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.
A student was asked to perform an experiment in the laboratory based on the instructions given:
Observe the picture given below and state one observation for the experiment you would notice on mixing the given solution.
