Advertisements
Advertisements
Question
Describe what you see when concentrated nitric acid is added to copper.
Solution
When concentrated nitric acid is added to copper brown fumes of nitrogen dioxide are observed.
APPEARS IN
RELATED QUESTIONS
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
Write equation for the following conversions A, B, C and D.
How will you prepare the following from nitric acid?
Sodium nitrate
Fill in the blank with appropriate word/words.
3 Cu + 8 HNO3 (dilute) → _______ + 4H2O + _________
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
During a thunderstorm, the rainwater contains nitric acid. The nitric acid is formed as a result of three chemical reactions. Describe or write balanced chemical equation for these three reactions.
Identify the gas evolved when sulphur is treated with concentrated nitric acid \[\ce{NH3}\].
A dilute acid B does not normally give hydrogen when reacted with metals but does give a gas when reacts with copper. Identify B. Write the equation with copper.
Give a balanced equation for the following reaction:
Copper reacts with concentrated nitric acid.
