English

Which of the following is a combination and which is a displacement reaction? (a) Cl2 + 2KI -> 2KCl + I2 (b) 2K + Cl2 -> 2KCl

Advertisements
Advertisements

Question

Which of the following is a combination and which is a displacement reaction?

  1. \[\ce{Cl2 + 2KI -> 2KCl + I2}\]
  2. \[\ce{2K + Cl2 -> 2KCl}\]
Very Short Answer
Advertisements

Solution

Combination reaction Displacement reaction
\[\ce{2K + Cl2 -> 2KCl}\] \[\ce{Cl2 + 2KI -> 2KCl + I2}\]
shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Chemical Reactions and Equations - Exercise 2 [Page 61]

APPEARS IN

Lakhmir Singh Chemistry Part 2 [English] Class 10
Chapter 1 Chemical Reactions and Equations
Exercise 2 | Q 19. | Page 61

RELATED QUESTIONS

In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.


State two characteristics of the chemical reaction which takes place when dilute sulphuric acid is poured over zinc granules.


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


What type of chemical reaction is represented by the following equation?

\[\ce{A2O3 + 2B -> B2O3 + 2A}\]


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.

  1. What could metal X be?
  2. What could metal Y be?
  3. Name the metal salt YSO4.
  4. What type of chemical reaction takes place when metal X reacts with salt solution YSO4? Write the equation of the chemical reaction involved.
  5. Name the alloy Z.

When a strip of red-brown metal X is placed in a colourless salt solution YNO3 then metal Y is set free and a blue coloured salt solution X(NO3)2 is formed. The liberated metal Y forms a shining white deposit on the strip of metal Х.

  1. What do you think metal X is?
  2. Name the salt YNO3.
  3. What could be metal Y?
  4. Name the salt X(NO3)2.
  5. What type of reaction takes place between metal X and salt solution YNO3?

Fill in the blank.

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


Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.

\[\ce{AgNO3_{(aq)} + NaCl_{(aq)}-> AgCl_{(s)} + NaNO3}\]


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.


Classify the following reaction into different type:

Zn + CuSO4 → ZnSO4 + Cu


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


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.


Consider the following chemical equation I and II

  1. \[\ce{Mg + 2HCl -> MgCl_2 +H_2}\]
  2. \[\ce{NaOH +HCl -> NaCl + H_2O}\]

The correct statement about these equations is:


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

A piece of zinc is dipped in ferrous sulphate solution.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×