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प्रश्न
State the effect of adding a small amount of : (a) sodium hydroxide (b) ammonium hydroxide followed by an excess in case to samples of the salt solutions.
Zinc nitrate [ small amount ________ in excess ________]
उत्तर
Zinc nitrate :
a. with sodium hydroxide :
- \[\ce{Zn(NO3) + 2NaOH -> Zn(OH)2 + 2NaNO3}\]
- On addition of excess of NaOH, white ppt. of Zn(OH)2 dissolves.
b. With ammonium hydroxide :
- \[\ce{Zn(NO3) + 2NH4OH -> Zn(OH)2 + 2NH4NO3}\]
- The gelatinous white insoluble ppt. of Zn(OH)2 dissolves in excess of ammonium hydroxide.
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संबंधित प्रश्न
Name a nitrate of metal which on heating does not give nitrogen dioxide
From the following list of substances, choose one substance in each case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A nitrate which gives off oxygen and nitrogen dioxide when heated.
State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Dilute hydrochloric acid and dilute sulphuric acid. (Using lead nitrate solution)
Complete the following equations :
3 Cu + dil. HNO3
How does nitric acid formed in the atmosphere?
What is meant by the following term?
Aqua regia
Mention three important uses of nitric acid. Give the property of nitric acid involved in the use.
Give two tests of the following:
NH3
State the effect of adding a small amount of : (a) sodium hydroxide (b) ammonium hydroxide followed by an excess in case to samples of the salt solutions.
Calcium nitrate [ small amount __________ in excess __________ ]
