General Chemistry Answers

2.Consider a salt bridge voltaic cell represented by the following reaction:

Fe(s)+2T1(aq) ====> Fe²(aq)+2T1(s)

Choose the best answer from the choices in each part below:

a.What is the path of electron flow? Through the salt bridge, or

through the external circuit?

b.To which half-cell do the negative ions in the salt bridge move? Themanode, or the cathode?

c.Which metal is the electrode in the anode?

3.Calculate E° for the following:

a.Iron and water to produce iron(II) hydroxide and hydrogen gas.

b.Pt | S^2- | S || NO₃- | NO | Pt (basic medium).

c.3SO₄^2-(aq)+12H⁺(aq)+2A1(s) 3SO₂(g)+2A1³⁺(aq)

4.Predict what reaction, if any, will occur when the following species are mixed at standard conditions.(Use Table 17.1 in the uploadedbook chapter.)

a.Cr, Ni², C1^- (in acidic solution)

b.Sulfur is added to mercury.

c.Liquid bromine is added to an aqueous solution of sodium

chloride.

1.For the following half-reactions, answer the questions below.

Ce⁴⁺(aq) + e^- ====> Ce³ (aq) E°= +1.61 V

Ag⁺(aq) + e^- ====> Ag(s) E°= +0.80 V

Hg₂²⁺(aq) + 2e^- ====> 2Hg(I) E°= +0.80 V

Sn²⁺(aq) + 2e^- ====> Sn(s) E°= -0.14 V

Ni²⁺(aq) + 2e^- ====> Ni(s) E°= -0.24 V

A1³⁺(aq) +3 e^- ====> A1(s) E°= -1.68 V

a.Which is the weakest oxidizing agent?

b.Which is the strongest oxidizing agent?

c.Which is the strongest reducing agent?

d.Which is the weakest reducing agent?

e.Will Sn(s) reduce Ag+(aq) to Ag(s)?

f.Will Hg(l) reduce Sn2+(aq) to Sn(s)?

g.Which ion(s) can be reduced by Sn(s)?

h.Which metal(s) can be oxidized by Ag+(aq)?

) In the reaction of AgNO3 (aq) and CaCl2 (aq) to produce Ca(NO3)2 (aq) and AgCl (s), a 

        chemist weighs out 5.35 g of AgNO3.  How many formula units of AgNO3 is the chemist 

        reacting?

A gas expands from 264 mL to 971 mL at constant temperature. Calculate the work done (in joules) by the gas if it expands

a. against a vacuum

b. against a constant pressure of 4.00 atm.

Write the correct Lewis structure of product and show the step-by-step solution on how you came up with the structure.

HCN- highly toxin conjugate acid of a cyanide that is used as a chemical weapon agent.

Write the correct Lewis structure of product and show the step-by-step solution on how you came up with the structure.

SOCl2- primarily used as a chlorinating reagent.

Write the correct Lewis structure of product and show the step-by-step solution on how you came up with the structure.

SO4- mostly found in the environment as a result at atmospheric and terrestrial processes.

Write the correct Lewis structure of product and show the step-by-step solution on how you came up with the structure.

CCl2F2- one of the compounds responsible for the depletion of stratospheric ozone.

1. It describes the angular momentum of an electron represented by arrows.

A. Angular quantum number

B. Spin quantum number

C. Magnetic quantum number

D. Principal quantum number

b. What is the mass in grams of H2 when 4.0 moles of HCl is added to the reaction?