a)
Interpretation:
The reducing agent and property of the element to act as reducing agent has to be discussed.
Concept Introduction:
Reducing agent: In a
b)
Interpretation:
The oxidizing agent and property of the element to act as oxidizing agent has to be discussed.
Concept Introduction:
Oxidizing agent: In a redox reaction, a oxidizing agent is an element or compound that gains an electron from another chemical species.
c)
Interpretation:
The given reaction only produce
Concept Introduction:
Ionization energy (IE): The ionization energy is the required to remove an electron from an atom in the gas phase.
General formula of ionization energy=
As predicted by coulomb’s law, energy must be supplied to overcome the attraction between an electron and the nucleus and to separate the electron from the atom. Thus ionization energies always have positive values. An electron father from the nucleus generally has smaller ionization energy and electron closer to the nucleus has larger ionization energy.
Increase and decrease electro negativity: The less vacancy electrons an atoms has the least it will gain of electrons. Moreover the
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Chapter 7 Solutions
Chemistry & Chemical Reactivity
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- Why does the reactivity of the alkali metals decrease from cesium to lithium?arrow_forwardThe amount of sodium hypochlorite in a bleach solution can be determined by using a given volume of bleach to oxidize excess iodide ion to iodine; ClO- is reduced to Cl-. The amount of iodine produced by the redox reaction is determined by titration with sodium thiosulfate, Na2S2O3; I2 is reduced to I-. The sodium thiosulfate is oxidized to sodium tetrathionate, Na2S4O6. In this analysis, potassium iodide was added in excess to 5.00 mL of bleach (d=1.00g/cm3) . If 25.00 mL of 0.0700 M Na2S2O3 was required to reduce all the iodine produced by the bleach back to iodide, what is the mass percent of NaClO in the bleach?arrow_forwardSodium perchlorate, NaClO4, is produced by electrolysis of sodium chlorate, NaClO3. If a current of 2.50 103 A passes through an electrolytic cell, how many kilograms of sodium perchlorate are produced per hour?arrow_forward
- 1. A thin wire of silver (Z=47, A = 107.87, face-centered-cubic, density = 10.49 g/cm³) is measured at 15 m long and 0.025 m in diameter and has an electrical resistance of 0.05 2. Assume that each Ag atom contributes three conduction electrons to the metal. (a) What is the concentration of conduction electrons in Ag (number/m³)? (b) What is the mean free time between collisions for the electrons in Ag (in s)? (c) What is the drift velocity of electrons if an 8 V/m electric field is applied? (d) Calculate the current density in the wire (in A/m²) from the applied electric field in part (c).arrow_forwardWhat is the net ionic equation of Na(s) + HCl(l) and Mg(s) + HCl(l)?arrow_forwardConsider the reaction: CH 4( g) + 2O 2( g) → CO 2( g) + 2H 2O( g) Which of the following statements is correct? Oxygen is the reducing agent. The reaction is not an oxidation-reduction reaction. Oxygen is oxidized. Carbon is oxidized. Carbon is the oxidizing agent.arrow_forward
- In which of the following equations does sulfuric acid act as an oxidizing agent? In which does it act as an acid? Explain.arrow_forwardPredict the product(s) and write a balanced equation for each of the following redox reactions:(a) N2(g) + H2(g) →(b) NaClO3(s) →Δ(c) Ba(s) + H2O(l) →arrow_forwardTitanium (IV) exists in aqueous solution but not as the Ti4+(aq) ion. Suggest the identity of the species.arrow_forward
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