Advertisements
Advertisements
Question
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 __________ ]
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Correct the following, if required:
HNO3 is a strong reducing agent.
Correct the following, if required:
Nitric acid remains colourless even when exposed to light.
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 on heating decomposes into dinitrogen oxide [nitrous oxide] and steam.
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
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)
How does nitric acid formed in the atmosphere?
What is meant by the following term?
Aqua regia
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
