Identifythe type of reaction.)Combustion of magnestum metal in atr) Ac

1.	Identifythe type of reaction.)Combustion of magnestum metal in atr) Action of dilute sulphuric acid on zinc.) Effect of heat on lead nitrate.
Answer» (1) Burning a magnesium metal is a combustion, exothermic, redox reaction. (2) Zinc is more reactive than hydrogen and it displaces hydrogen from dilute acids. Zinc reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas is evolved. This is a single displacement reaction of a non-metal by a metal. (3) When heated, lead(II) nitrate crystals decompose to lead(II) oxide, oxygen and nitrogen dioxide. Because of this property, lead nitrate is sometimes used in pyrotechnics such as fireworks.

Identifythe type of reaction.)Combustion of magnestum metal in atr) Action of dilute sulphuric acid on zinc.) Effect of heat on lead nitrate.

Answer»

(1) Burning a magnesium metal is a combustion, exothermic, redox reaction.

(2) Zinc is more reactive than hydrogen and it displaces hydrogen from dilute acids. Zinc reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas is evolved. This is a single displacement reaction of a non-metal by a metal.

(3) When heated, lead(II) nitrate crystals decompose to lead(II) oxide, oxygen and nitrogen dioxide. Because of this property, lead nitrate is sometimes used in pyrotechnics such as fireworks.

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