MnOA2+4HCl⟶MnClA2+2HA2O+ClA2 0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed. - Chemistry

$MnO_{2} + 4 HCl ⟶ MnCl_{2} + 2 H_{2} O + Cl_{2}$

0.02 moles of pure MnO₂is heated strongly with conc. HCl. Calculate the mass of salt formed.

Numerical

1 mole MnCl₂ weighs = 55 + 2 = 126 g

So, 0.02 mole MnCl₂ will weigh = 126 × 0.02 g = 2.52 g

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Chapter 5 Mole concept and Stoichiometry
Exercise 5D | Q 11.3 | Page 94

Write the balanced chemical equation for the following reaction.

$Aluminium + Copper chloride ⟶ Aluminium chloride + Copper$

State one characteristic of the chemical reaction which takes place when dilute hydrochloric acid is added to sodium carbonate.

A white precipitate can be obtained by adding dilute sulphuric acid to:
(a) CuSO₄ solution
(b) Nacl solution
(c) BaCl₂ solution
(d) Na₂SO₄ solution

Write your observation and name the product when ron nails are added to an aqueous solution of copper sulphate.

In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?

Write the balanced chemical equations of the following reactions.

chlorine + sulphur dioxide + water → sulphuric acid + hydrogen chloride

Write word equation for the following molecular equation:

$NH_{3} [g] + HCl [g] \overset{- ⇀}{↽ -} NH_{4} Cl [s]$

Word equation:
State which characteristic is observed in the above reaction.

Give an-example of a similar above characteristic, seen between two other gaseous reactants.

$2 KClO_{3} \overset{MnO_{2}}{\to} 2 KCl + 3 O_{2} [g] - is a balanced equation \cdot$

State why the compound MnO₂ is written above the arrow.

Which of the following is not a physical change?

Which among the following is(are) double displacement reaction(s)?