Advertisements
Advertisements
Question
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.
Advertisements
Solution
Mass of Mn = 54.93
Mass of Cl = 35.45
Cl2 = 35.45 × 2 = 70.9
∴ 1 mole MnCl2 weighs = 54.93 + 70.9
= 125.83 g ≈ 126 g
So, 0.02 mole MnCl2 will weigh = `126/1` × 0.02 g
= 2.52 g
RELATED QUESTIONS
Write the balanced equation for the following reaction, and add the state symbols:
Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.
Is Respiration an endothermic reaction or an exothermic reaction?
Write symbolic representation for the following word equation and balance them :
Iron + Sulphur → Iron sulphide.
Balance the following equation :
Fe + O2 → Fe3 O4
Balance the following equation Also name the product formed.
`"K" + "CI"_2 → "KCI"`
Balance the following equation. Also name the product formed.
`"CO" + "O"_2 → " CO"_2`
Show the formation of Na2O by the transfer of electrons.
Balance the following simple equation:
Ca + H2O → Ca(OH)2 + H2
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Make a list of the elements in the chemical equation.
Which of the following is not a physical change?
