A 25.5g sample of a metal has a volume of 31.5ml what is the density of this metal
1 answer:
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Answer:
The maximum mass of sulfurous acid that can be formed is 32.54 grams.
Explanation:
The balanced reaction is:
SO₂ + H₂O → H₂SO₃
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
- SO₂: 1 mole
- H₂O: 1 mole
- H₂SO3: 1 mole
Being the molar masses of each compound:
- SO₂: 64 g/mole
- H₂O: 18 g/mole
- H₂SO₃: 82 g/mole
Then, by stoichiometry the following quantities of mass participate in the reaction:
- SO₂: 1 mole* 64 g/mole= 64 g
- H₂O: 1 mole* 18 g/mole= 18 g
- H₂SO₃: 1 mole* 82 g/mole=82 g
The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, you can use a simple rule of three as follows: If 18 grams of water react with 64 grams of sulfur dioxide, how much mass of sulfur dioxide does 11.6 grams of water react with?
mass of sulfur dioxide= 41.24 grams
But 41.24 grams of sulfur dioxide are not available, 25.4 grams are available. Since you have less mass than you need to react with 11.6 grams of water, sulfur dioxide will be the limiting reagent.
Then you can apply the following rule of three: if by reaction stoichiometry 64 grams of sulfur dioxide produce 82 grams of sulfurous acid, 25.4 grams of sulfur dioxide, how much mass of sulfurous acid will it produce?
mass of sulfurous acid= 32.54 grams
<u><em>The maximum mass of sulfurous acid that can be formed is 32.54 grams.</em></u>
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Answer:
The reaction is an exothermic reaction .
The value of q is -880 kilo Joules.
Explanation:
Exothermic reactions are defined as the reactions in which energy of reactants is more than the energy of the products. In these reactions, energy is released by the system. The total enthalpy of the reaction comes out to be negative.
According to reaction, 2 moles of ammonia when reacts with 3 moles of nitrous oxide to give 4 moles of nitrogen gas and 3 moles of water vapor, along with release of 880 kJ of heat energy.
Since, heat is evolved during the course of reaction which means that reaction is an example of Exothermic reaction.
The reaction is an exothermic reaction .
The value of q is -880 kilo Joules.