Write a balanced chemical equation for the following: Reaction of lead nitrate solution with ammonium hydroxide.

Lead nitrate solution when reacts with ammonium hydroxide it forms a white precipitate of lead hydroxide and an aqueous solution of ammonium nitrate. Pb NO 3 2 + 2 NH 4 OH → Pb ( OH ) 2 white precipitate + 2 NH 4 NO 3 This precipitate dissolves in the excess of ammonium hydroxide. It is a double displacement reaction.

Balance the following equation: Fe + H 2 O → Fe 3 O 4 + H 2

The balanced equation is as follows: 3 Fe + 4 H 2 O → Fe 3 O 4 + 4 H 2 When iron reacts with oxygen and water, iron oxide is formed. This iron oxide is commonly known as rust and the process is known as rusting.

EASY

Earn 100

Write the balanced chemical reaction when iron reacts with water and steam.

Important Questions on Chemical Reactions and Equations

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What is observed when a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube ? Write equation for the chemical reaction involved and name the type of reaction in this case.

MEDIUM

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The colour of

{NO}_{2}

and

PbO

formed when lead nitrate is heated are:

HARD

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In a double displacement reaction such as the reaction between sodium sulphate solution and barium chloride solution:

(A) exchange of atoms takes place.

(B) exchange of ions takes place.

(D) an insoluble salt is produced.

The correct option is:

MEDIUM

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What is observed when a pinch of sodium hydrogen carbonate is added to

2

mL of acetic acid taken in a test tube? Write the chemical equation for the reaction involved in this case.

MEDIUM

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Write values of a, b, and c so that following chemical equation is balanced

${aH}_{2} + {bO}_{2} \to {cH}_{2} O$

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On heating blue coloured powder of copper (II) nitrate in a boiling tube, black copper oxide,

O_{2}

and a brown gas X is formed.
(a) Identify the type of reaction and the gas X.
(b) Write balanced chemical equation of the reaction.
(c) Write the

pH

range of aqueous solution of the gas X.

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Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light, and electricity.

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The reaction of the iron nail with copper sulphate solution is a _____ reaction.

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A chemical equation is said to be balanced if number of

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The values of stoichiometric coefficients $m, x, y$ and $z$ in the following reaction after balancing are, respectively:

$m {({NH}_{4})}_{2} {Cr}_{2} O_{7} \overset{∆}{\to} {xCr}_{2} O_{3} + {yN}_{2} + {zH}_{2} O$

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What would a student report nearly after

30

minutes of placing duly cleaned strips of aluminium, copper, iron and zinc in freshly prepared iron sulphate solution taken in four beakers?

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Which of the following is a correct balanced equation?

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When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of a :

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1 g

of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of reactions, the name and the colour of the products formed in each case.

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Calcium oxide reacts vigorously with water to produce slaked lime.

${CaO}_{(s)} + H_{2} O_{(l)} \to Ca {(OH)}_{2 (aq)}$