General Chemistry Answers

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.

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)

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?

A sample contains 5.88 % by mass of the compound: C6H3Cl(CO2H)2. (i) What mass of sample will be required to react completely with 3.924 g of sodium hydroxide?

(ii) Give the repeating unit when the compound, C6H3Cl(CO2H)2, reacts with C4H8(CH2NH2)2.

A peanut butter seller sells an average of 250 bottles of 1 kg week with a standard deviation of 42 kg. The sales are normally distributed.

a) If a sample of 16 weeks was selected for a study, find the probability that the sample mean is greater than 300 bottles

b) In one year how many weeks would record sales of less than 150 bottles

How many license plates can be made using either two or three letters followed by either two or three digits?

(P^Q^R)V (¬P^Q^R)V(¬P^¬Q^¬R)

determine the change in entropy of 15 moles carbon dioxide when it is heated from 25 to 27°C. Assume constant pressure. Heat capacity is not constant throughout the process.

 250. 0 mL of 1.00 M NaOH solution has a density of 1.90 g/mL. Calculate the concentration of this solution in molality.

1.    Balance each of the following equations according to the half-reaction method:

a) Br₂(l) + SO₂(g) ⟶ Br⁻(aq) + SO₄²⁻(aq)                               (in acid)

b) Cl₂(g) + OH−(aq) ⟶ Cl⁻(aq) + ClO₃⁻(aq)                            (in base)