Lead nitrate heated: equation and type
This type of question, asked 4 times: 2023, 2024, 2025, 2026. All 5 questions below, oldest first.
Try each one first, then open its answer.
Question 1
2023
21A metal nitrate ‘A’ on heating gives a metal oxide along with evolution of a brown coloured gas ‘B’ and a colourless gas, which helps in burning. Aqueous solution of ‘A’ when reacted with potassium iodide forms a yellow precipitate. (a) Identify ‘A’ and ‘B’ (b) Name the types of both the reactions involved in the above statement.Question 2
2024
34 (a)When lead nitrate is heated strongly in a boiling tube, two gases are liberated and a solid residue is left behind in the test tube. (i) Name the type of chemical reaction and define it. (ii) Write the name and formula of the coloured gas liberated. (iii) Write the balanced chemical equation for the reaction. (iv) Name the residue left in the test tube and state the method of testing its nature (acidic/basic).Question 3
2025
26What happens when : (write balanced chemical equation) (a) Lead nitrate is thermally decomposed, (b) Natural gas burns in oxygen (or air) ?Question 4
2026
26What happens when (i) lead (II) nitrate is heated ? (ii) iron (II) sulphate is heated ? (iii) silver chloride is exposed to sunlight ? Write balanced chemical equations of the reactions involved in support of your answer.Question 5
2026
26Account for the following : (a) White silver chloride turns grey when exposed to sunlight. (b) Lead (II) nitrate on heating releases brown fumes. (c) Bags of oil and fat containing food items are flushed with nitrogen gas.