Skip to content

Menu

Game modes

Account

← Chemistry
GK QUESTION#3359

Heating lead nitrate produces brown fumes. Which gas causes this colour?

  1. ANitrous oxide
  2. BNitric oxide
  3. CNitrogen dioxideCorrect answer
  4. DDinitrogen trioxide
Show AnswerHide Answer

Answer

C. Nitrogen dioxide

Show ExplanationHide Explanation

Explanation

Heating lead nitrate gives lead oxide, nitrogen dioxide and oxygen: 2Pb(NO₃)₂→2PbO+4NO₂+O₂. Nitrogen dioxide is the brown gas in this decomposition. Nitric oxide is colourless when pure, and nitrous oxide is a different nitrogen oxide.

Sign in to report a question issue

Explore this topic

Which listed substance is correctly paired with its formula?What is the product formed in aqueous solution when calcium carbonate reacts with carbon dioxide and water?In the usual iron-nail displacement experiment, a ______ copper(II) sulphate solution becomes ______ as iron(II) sulphate forms.