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3 years ago

♔♔Why is mass conserved in chemical reactions?❦❦❦

Chemistry

2 answers:

Slav-nsk [51]3 years ago

7 0

Answer:

Heya..

here's ur answer ⤵️

Explanation:

Mass is never lost or gained in chemical reaction.

we say that mass is always conserved. In other words the total mass of products at the end of the reaction is equal to the total mass of the Reactants at the beginning. This is because no atom are created or destroyed during chemical reactions.

Hope this helps u 

Allushta [10]3 years ago

5 0

Answer:

Atoms are not created or destroyed by chemical reactions. Also, matter is neither created nor destroyed, it just changes form. Matter cannot be created or destroyed. ... The Law of Conservation of Mass states that in a chemical reaction the total mass of reactants is equal to the total mass of products.

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.

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3 years ago

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3 years ago

The reaction between carbon tetrachloride, CCl4, and water, H2O, to form carbon dioxide, CO2, and hydrogen chloride, HCl, has a

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Answer:

1) a) It is a slow reaction kinetically.

2) a) It is a catalyst.

3) c) It lowered the activation energy of the reaction.

Explanation:

1) The reaction between carbon tetrachloride, CCl₄, and water, H₂O, to form carbon dioxide, CO₂, and hydrogen chloride, HCl, has a ΔG° value of -232 kJ/mole, and so is thermodynamically favored. But when you mix carbon tetrachloride with water, no change is observed. What is a possible explanation for this?

a) It is a slow reaction kinetically. TRUE. This is the most likely explanation of why no change is observed.

b) The activation energy of the reaction is too small. FALSE. Slow reactions have a large activation energy.

c) The reaction is not spontaneous. FALSE. ΔG° < 0 so the reaction is spontaneous.

d)The reaction is not favored thermodynamically. FALSE. ΔG° < 0 so the reaction is favored thermodynamically.

2) What word best describes the role that the palladium plays in the reaction between propene and hydrogen above?

It is a catalyst because it increases the rate of the reaction without being altered by the end of the reaction.

3) What did the palladium do to increase the rate of the reaction between the propene and hydrogen?

a)It changed the thermodynamic equilibrium. FALSE. Catalysts don't affect equilibrium

b)It made the Gibbs free energy of the reaction more positive. FALSE. Catalysts don't affect Gibbs free energy.

c)It lowered the activation energy of the reaction. TRUE. According to the Arrhenius equation, the lower the activation energy, the higher the rate constant, and the higher the rate of reaction. This is how catalysts act.

d)It increased the activation energy of the reaction. FALSE.

7 0

4 years ago

♔♔Why is mass conserved in chemical reactions?❦❦❦​

♔♔Why is mass conserved in chemical reactions?❦❦❦