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ludmilkaskok [199]
3 years ago
9

A kinetics experiment is set up to collect the gas that is generated when a sample of chalk, consisting primarily of solid CaCO3

, is added to a solution of ethanoic acid, CH COOH. The rate of reaction between CaCo, and CH3COOH is determined by measuring the volume of gas generated at 25°C and I atm as a function of time. Which of the following experimental conditions is most likely to increase the rate of gas production?
(A) Decreasing the volume of ethanoic acid solution used in the experiment acid solution used in the experiment experiment is performed
(B) Decreasing the concentration of the ethanoic
(C) Decreasing the temperature at which the
(D) Decreasing the particle size of the CacO, by grinding it into a fine powder
Chemistry
1 answer:
velikii [3]3 years ago
8 0

(D) Decreasing the particle size of the CacO, by grinding it into a fine powder

Explanation:

To produce more gases by increasing the rate of the chemical reaction, if we grind the chalk into powder, this should walk.

The rate at which chemical reactions takes place is a measure of the speed of  the reaction.

Some factors control the rate of chemical reactions. They are:

  1. Nature of reactants
  2. Concentration of reactants or pressure if gaseous.
  3. Temperature
  4. Presence of a catalyst
  5. Sunlight

The most applicable in this scenario is grinding the chalk into fine powder. This process increases the surface area exposed. Surface area exposed proportionally affects the rate of a reaction.

Learn more:

Surface area brainly.com/question/9666705

#learnwithBrainly

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Answer:

Chelate, any of a class of coordination or complex compounds consisting of a central metal atom attached to a large molecule, called a ligand, in a cyclic or ring structure. An example of a chelate ring occurs in the ethylenediamine-cadmium complex:

The ethylenediamine ligand has two points of attachment to the cadmium ion, thus forming a ring; it is known as a didentate ligand. (Three ethylenediamine ligands can attach to the Cd2+ ion, each one forming a ring as depicted above.) Ligands that can attach to the same metal ion at two or more points are known as polydentate ligands. All polydentate ligands are chelating agents.

Chelates are more stable than nonchelated compounds of comparable composition, and the more extensive the chelation—that is, the larger the number of ring closures to a metal atom—the more stable the compound. This phenomenon is called the chelate effect; it is generally attributed to an increase in the thermodynamic quantity called entropy that accompanies chelation. The stability of a chelate is also related to the number of atoms in the chelate ring. In general, chelates containing five- or six-membered rings are more stable than chelates with four-, seven-, or eight-membered rings.

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