Advertisements
Advertisements
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 ________]
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Correct the following, if required:
HNO3 is a strong reducing agent.
Name a nitrate of metal which on heating does not give nitrogen dioxide.
Name a nitrate which on heating leaves no residue behind.
Fill in the blank:
The catalytic oxidation of ammonia to nitric oxide is ------------. (exothermic / endothermic)
process.
Fill in the blank :
Magnesium gives ------------(O2, H2, NO) with very dilute nitric acid.
Fill in the blank:
------------ (iron / copper) become passive in concentrated nitric acid
What is meant by the following term?
Aqua Fortis
Mention three important uses of nitric acid. Give the properties of the nitric acid involved in its use.
Name the following:
A nitrate which has no water of crystallization.
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
