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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
Correct the following, if required:
NaNO3 gives NO2 and O2 on heating.
Correct the following, if required:
Constant boiling nitric acid contains 80% nitric acid by weight.
Name a nitrate which on heating leaves no residue behind.
Fill in the blank:
Aqua regia is a mixture of 3 parts ------------ and one part ------------.
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
What is meant by the following term?
Aqua regia
Mention three important uses of nitric acid. Give the properties of the nitric acid involved in its use.
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
