CHEMISTRY HIGH SCHOOL

Calcium reacts with water. This reaction is represented by the balanced equation below. The aqueous product of this reaction can be heated to evaporate the water, leaving a white solid, Ca(OH)2(s).Ca(s) + H2O(l) ==> Ca(OH)2(aq) + H2(g)

Compare the electrical conductivity of the aqueous product in the reaction to the electrical conductivity of the white solid that remains after the water is evaporated from the solution.

Write the chemical name of the base produced in the reaction.

State one change in reaction conditions that will increase the rate of the reaction.

Answers

Answer 1
Answer:

Answer:

- Calcium is more conductive than calcium hydroxide.

- Calcium hydroxide.

- Addition of more either calcium or water to the reaction vessel

Explanation:

Hello,

In this case, based on the given reaction and information, calcium's electrical conductivity 0.298 106/(cm*Ω) which is a relatively high value compared to it its base has due to its large insolubility.

In addition, the name of the formed base is calcium hydroxide based on the IUPAC rules.

Moreover, the addition of more either calcium or water to the reaction vessel will generate more calcium hydroxide.

Best regards.
Answer 2
Answer: The aqueous product conducts electricity while the solid does not. Ionic solids do not conduct electricity, but ions dissolved in solution do.The chemical name of the base is calcium hydroxide.Increasing the temperature of the system would increase the rate of the reaction.

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the guy below should be deleted but you cant cause its approved, he didnt even asnwer the question XD

Select all that apply to the property of hardness.Hardness is a physical property
Hardness is indicative of the strength of chemical bonds between elements.
Hardness is determined through a complicated process that requires expensive instruments.
Friedrich Mohs developed the standard hardness scale.
Diamond can scratch quartz.

Answers

The correct statements are:

Hardness is a physical property
Friedrich Mohs developed the standard hardness scale.
Diamond can scratch quartz.

Answer:The properties of the Hardness are:

  • Hardness is a physical property
  • Hardness is indicative of the strength of chemical bonds between elements.
  • Diamond can scratch quartzExplanation:

Hardness is defined as resistance offered by a material when subjected to any kind of mechanical effort.It is a physical property

Hardness of a materiel indicates its strength that strength of its chemical bond between the atoms and their arrangement in space.

Mohs scale is a scale which measures the hardness of the materiel from 1 to 10. Materiel with higher Mohs scale number will able to scratch materiel with lower Mohs scale score.

The properties of the Hardness are:

Hardness is a physical property

Hardness is indicative of the strength of chemical bonds between elements.

Diamond can scratch quartz.

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Answers

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Answers

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Answers

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Answers

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Explanation:
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