Advertisements
Advertisements
प्रश्न
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.
Advertisements
उत्तर
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
संबंधित प्रश्न
Write a balanced chemical equation for the process of photosynthesis giving the physical states of all the substances involved and the conditions of the reaction.
Balance the following chemical equation:
Write balanced chemical equation with state symbols for the following reaction:
Barium chloride solution reacts with sodium sulphate solution to give insoluble barium sulphate and a solution of sodium chloride.
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 +Cu
Balance the following equation:
Fe2O3 + CO → Fe + CO2
Give reason for the following:
Silver salts are kept in dark coloured bottles.
Balance the following simple equation:
CO2 + C → CO
Balance the following simple equation:
\[\ce{Ca(OH)2 + HNO3 -> Ca(NO3)2 + H2O}\]
Give a balanced equation by partial equation method, [steps are given below].
The reaction of excess ammonia with chlorine – Ammonia as a reducing agent
- Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
- Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
PbO2 +4HCl → PbCl2 + H2O + Cl2
