Advertisements
Advertisements
Question
State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
Solution
Concentrated nitric acid is strong oxidising agent; it oxidises the sulphur to sulphuric acid along with the water and nitrogen dioxide
\[\ce{S + 6HNO3 -> H2SO4 + 2H2O + 6NO2}\]
APPEARS IN
RELATED QUESTIONS
Correct the following, if required:
\[\ce{HNO3}\] is a strong reducing agent.
Correct the following, if required:
\[\ce{NaNO3}\] gives \[\ce{NO2}\] and \[\ce{O2}\] on heating.
Correct the following, if required:
Nitric acid remains colourless even when exposed to light.
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 only oxygen when heated
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.
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
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 ________]
