Classify the Following Reaction into Different Type: Zn + Cuso4 → Znso4 + Cu - Science

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Classify the following reaction into different type:

Zn + CuSO4 → ZnSO4 + Cu



Zn + CuSO4 → ZnSO4 + Cu
This is an example of a displacement reaction.

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2018-2019 (March) 31/4/2



Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
(c) Displacement reaction
(d) Double displacement reaction

CuSO4(aq) + Zn(s)  ZnSO4(aq) + Cu(s) is an example of a decomposition reaction.

The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is

  1. Cu2O
  2. Cu
  3. CuO
  4. CuS

\[\ce{Fe2O3 + 2Al -> Al2O3 + 2Fe}\]

The above reaction is an example of a ______.

Write the balanced chemical equation for the following and identify the type of reaction.

\[\ce{Magnesium(s) + Hydrochloric acid(aq) -> Magnesium chloride(aq) + Hydrogen(g)}\]

Why does the colour of copper sulphate solution change when an iron nail is kept immersed in it?

What happens when a piece of iron metal is placed in copper sulphate solution? Name the type of reaction involved.

A strip of metal X is dipped in a blue coloured salt solution YSO4. After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metal X and metal Y together form an alloy Z.
(a) What could metal X be?
(b) What could metal Y be?
(c) Name the metal salt YSO4.
(d) What type of chemical reaction takes place when metal X reacts with salt solution YSO4? Write the equation of the chemical reaction involved.
(e) Name the alloy Z.

When a black metal compound XO is heated with a colourless gas Y2, then metal X and another compound Y2O are formed. Metal X is red-brown in colour which does not react with dilute acids at all. Gas Y2 can be prepared by the action of a dilute acid on any active metal. The compound Y2O is a liquid at room temperature which can turn anhydrous copper sulphate blue.
(a) What do you think is metal X?
(b) What could be gas Y2?
(c) What is compound XO?
(d) What is compound Y2O?
(e) Write the chemical equation of the reaction which takes place on heating XO with Y2.
(f) What type of chemical reaction is illustrated in the above equation?

Fill in the blank.

The chemical change involving iron and hydrochloric acid illustrates a ...............reaction.

Classify the following reactions as decomposition, Also balance the equations.

(A) \[\ce{CaCO3(s)->[heat]CaO(s)+CO2(g)}\]

(B) Zn(s) +`"H"_2"SO"_4`  `→`  `"ZnSO"_4` (S) + `"H"_2` (g) 

(C) `"AgNO"_3` (aq)  + NaCI (aq) `→` Ag CI (S) + `"NaNO"_3` 

(D) `"NH"_3` (g) + HCI (g)  `→` `"NH"_4` CI (S)
(E) `"CuSO"_4` (aq)  + `"H"_2"S"` (g)  `→` CuS (S) + `"H"_2"SO"_4` (I)

(F) Zn (S) + `"CuSO"_4` (aq)  `→` `"ZnSO"_4` N  (aq) + Cu  (s) 

(g) \[\ce{Ca(s)O2(g)->[heat]CaO(s)}\]

(H) NaOH + HCI  `→` NaCI + `"H"_2"O"` 

(I) KOH + `"H"_2"SO"_4`  `→` `"K"_2"SO"_4`  + `"H"_2"O"`  

Explain the following types of chemical reactions giving two examples for each of them displacement reaction.

Name the type of reaction which is governed by the position of a metal in the metal activity series ?

Explain the terms with examples.

Displacement reaction

i) Observe the following reaction and answer the following questions.
`CuSO_4 (aq) + Fe (s) →  FeSO_4(aq) + Cu (s)`
a) Identify and write the type of chemical reaction.
b) Write the definition of above reaction.

What is observed after about 1 hour of adding the strips of copper and aluminium separately to the ferrous sulphate solution filled in two beakers? Name the reaction if any change in colour is noticed. Also, write a chemical equation for the reaction.

Classify the following reaction into different type:

AgNO3(aq) + NaCl(aq) →AgCl(s) + NaNO3(aq)

Give reasons for the following:
The reaction of iron (III) oxide [Fe2O3] with heated aluminum is used to join cracked machine parts.

Classify the following reaction into – 

  1. Direct combination 
  2. Decomposition
  3. Displacement
  4. Double decomposition

The reaction is – Zinc reacts with copper [II] sulphate to give zinc sulphate and copper.

Give a balanced equation for –

A displacement reaction involving a metal above hydrogen in the activity series with copper [II] sulphate solution

Select the correct answer for the statement given below:

The displaced product of the displacement reaction of sodium with cold water.

  • Complete the given chemical reaction:
    \[\ce{CuSO4_{(aq)} + Fe_{(s)} ->}\] _______ + _______
  • Name the type of the reaction.

A single displacement reaction is represented by X(s) + 2HCl(aq) → XCl2(aq) + H2(g). Which of the following(s) could be X.

(i) Zn

(ii) Ag

(iii) Cu

(iv) Mg.

Choose the best pair. 

Match the following

Identify the types of reactions.

NH4OH(aq) + CH3COOH(aq) → CH3COONH4(aq) + H2O(l) Single Displacement
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s) Combustion
\[\ce{ZnCO3_{(s)} + ->[Heat]ZnO_{(s)} + CO2_{(g)}}\] Neutralization
C2H4(g) + 4O2(g) → 2CO2(g) + 2H2 O(g) + Heat Thermal decomposition

Identify the type of chemical reaction given below:

\[\ce{CuSO4 + Fe -> FeSO4 + Cu}\]

Complete the following chemical reaction:

\[\ce{CuSO4 (aq) + Pb (s) -> \underline{}\underline{}\underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}\underline{}\underline{}}\]

Name the chemical reaction type.

Complete the given chemical equation:

\[\ce{Zn(s) + CuSO4(aq) -> \underline{}\underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}\underline{}}\]

Name the type of reaction.

State the change in colour observed in following case mentioning the reason:

A piece of zinc is dipped in ferrous sulphate solution.


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