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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.
Calcium nitrate [ small amount __________ in excess __________ ]
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उत्तर
Calcium nitrate :
a. with sodium hydroxide :
- \[\ce{Ca(NO3)2 ->[NaOH] Ca(OH)2 + NaNO3}\]
- White curdy ppt. is insoluble in excess of NaOH.
b. With ammonium hydroxide :
- \[\ce{Ca(NO3)2 ->[NH4OH] Ca(OH)2 + NH4NO3}\]
- No precipitation of Ca(OH)2 even in excess of ammonium hydroxide.
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संबंधित प्रश्न
Name a nitrate of metal which on heating does not give nitrogen dioxide.
Name a nitrate which on heating leaves no residue behind.
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.
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
What is meant by the following term?
Aqua Fortis
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.
Zinc nitrate [ small amount ________ in excess ________]
Differentiate between the following pair based on the criteria given:
Sulphuric acid and Nitric acid (using barium chloride solution)
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
