Concept explainers
(a)
Interpretation:
The authenticity of the given statements is to be determined.
Concept introduction:
The process of conversion of metal to its more stable chemical form like Hydroxide, Oxide or Sulphide is known as corrosion. Corrosion in case of Iron is known as rusting. The process of corrosion leads to the destruction of the metal.
To determine: The authentication of the given statement, “Corrosion is an example of an electrolytic process”.
The given statement is correct.
(b)
Interpretation:
The authenticity of the given statements is to be determined.
Concept introduction:
The process of conversion of metal to its more stable chemical form like Hydroxide, Oxide or Sulphide is known as corrosion. Corrosion in case of Iron is known as rusting. The process of corrosion leads to the destruction of the metal.
To determine: The authentication of the given statement, “Corrosion of steel involves the reduction of Iron coupled with the oxidation of oxygen”.
The given statement is incorrect.
(c)
Interpretation:
The authenticity of the given statements is to be determined.
Concept introduction:
The process of conversion of metal to its more stable chemical form like Hydroxide, Oxide or Sulphide is known as corrosion. Corrosion in case of Iron is known as rusting. The process of corrosion leads to the destruction of the metal.
To determine: The authentication of the given statement, “Steel rusts more easily in the dry (arid) Southwest states than in the humid Midwest states”.
The given statement is incorrect.
(d)
Interpretation:
The authenticity of the given statements is to be determined.
Concept introduction:
The process of conversion of metal to its more stable chemical form like Hydroxide, Oxide or Sulphide is known as corrosion. Corrosion in case of Iron is known as rusting. The process of corrosion leads to the destruction of the metal.
To determine: The authentication of the given statement, “Salting roads in the winter has the added benefit of hindering the corrosion of steel”.
The given statement is incorrect.
(e)
Interpretation:
The authenticity of the given statements is to be determined.
Concept introduction:
The process of conversion of metal to its more stable chemical form like Hydroxide, Oxide or Sulphide is known as corrosion. Corrosion in case of Iron is known as rusting. The process of corrosion leads to the destruction of the metal.
To determine: The authentication of the given statement, “The key to cathodic protection is to connect via a wire a metal more easily oxidized than Iron to the steel surface to be protected”.
The given statement is correct.
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Chapter 17 Solutions
Chemistry: An Atoms First Approach
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- For the cell: Cr|Cr3+Co2+|Co E° is 0.46 V. The same cell was prepared in the laboratory at standard conditions. The voltage obtained was 0.40 V. A possible explanation for the difference is (a) the surface area of the chromium electrode was smaller than the cobalt electrode. (b) the mass of the chromium electrode was larger than the mass of the cobalt electrode. (c) the concentration of Cr(NO3)2 solution used was less than 1.0 M. (d) the concentration of Cr(NO3)2 solution used was less than 1.0 M. (e) the volume of Cr(NO3)2 solution used was larger than the volume of Cr(NO3)2 solution used.arrow_forwardUsing Table 17.1, calculate E° for the reaction between (a) lead and silver nitrate ion to produce lead(II) nitrate. (b) oxygen and iron(II) ions to produce water and iron(III) ions. (c) sulfur and nitrogen oxide gas in basic solution to form nitrate and sulfide ions.arrow_forward
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