Forensic psychiatry focuses on the relationship between human behavior and criminal justice.

Balance each skeleton reaction, use Appendix D to calculate E°cell, and state whether the reaction is spontaneous:(b) Hg₂²⁺(aq)

Olegator [25]

The given reaction is not spontaneous.

We must recognize changes in oxidation states that take place across elements in order to balance these equations. To accomplish this, keep in mind following guidelines:

A neutral element on its own has an oxidation number of zero.For a neutral molecule, the total number of oxidations must be zero.The net charge of an ion is equal to the sum of its oxidation numbers.In a compound: hydrogen prefers +1, oxygen prefers -2, fluorine prefers -1.In a compound with no oxygen present the other halogens will also prefer -1.

One of the mercury atoms is oxidized from +1 to +2 in the simple aqueous ion, for a loss of 1 electron.

Oxidation half-reaction:

$0.5 Hg^{2+} _{2} (aq)$ → $Hg^{2+} (aq) + 1e^-$

$E^o _{ox} = - 0.92 V$

The other mercury is reduced from +1 to zero in mercury metal, for a gain of 1 electron.

Reduction half-reaction:

$0.5 Hg^{2+} _{2} (aq) + 1 e^-$ → $Hg(l)$

$E^o _{red} = 0.85V$

This is a disproportionation redox reaction !

Net reaction:

$Hg^{2+} _{2} (aq)$ → $Hg^{2+} (aq) + Hg (l)$

$E^o _{cell} = 0.85 - 0.92 = -0.07V$

The cell potential is negative so this reaction is NOT spontaneous.

To learn more about the non spontaneous reaction please click on the link brainly.com/question/20358734

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5 0

2 years ago

just type this into google and give me the answer 4 me plz!!!..........Describe Thomson's "plum pudding" model of the atom, and

n200080 [17]

Thomson's plum pudding model dictated that the atom contains negative charges surrounded by positive charges in close vicinity. Rutherford's experiment determined that the particles are not this close and the atom consists mainly of empty space and that it is the negative charge that surrounds the positive charge, not the other way around.

4 0

4 years ago

The reaction of equal molar amounts of benzene, C6H6, and chlorine, Cl2, carried out under special conditions, yields a gas and

WINSTONCH [101]

Answer : The molecular formula of a compound is, $C_6H_5Cl_1$

Solution : Given,

Mass of C = 64.03 g

Mass of H = 4.48 g

Mass of Cl = 31.49 g

Molar mass of C = 12 g/mole

Molar mass of H = 1 g/mole

Molar mass of Cl = 35.5 g/mole

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{64.03g}{12g/mole}=5.34moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{4.48g}{1g/mole}=4.48moles$

Moles of Cl = $\frac{\text{ given mass of Cl}}{\text{ molar mass of Cl}}= \frac{31.49g}{35.5g/mole}=0.887moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{5.34}{0.887}=6.02\approx 6$

For H = $\frac{4.48}{0.887}=5.05\approx 5$

For Cl = $\frac{0.887}{0.887}=1$

The ratio of C : H : Cl = 6 : 5 : 1

The mole ratio of the element is represented by subscripts in empirical formula.

The Empirical formula = $C_6H_5Cl_1$

The empirical formula weight = 6(12) + 5(1) + 1(35.5) = 112.5 gram/eq

Now we have to calculate the molecular formula of the compound.

Formula used :

$n=\frac{\text{Molecular formula}}{\text{Empirical formula weight}}$

$n=\frac{112.5}{112.5}=1$

Molecular formula = $(C_6H_5Cl_1)_n=(C_6H_5Cl_1)_1=C_6H_5Cl_1$

Therefore, the molecular of the compound is, $C_6H_5Cl_1$

5 0

3 years ago

Scientific knowledge must be supported by evidence an idea that is not supported by evidence but is made to appear scientific in

lilavasa [31]

Answer:Scientific evidence is evidence that serves to either support or counter a scientific theory or hypothesis, although scientists also use evidence in other ways, such as when applying theories to practical problems.

Explanation:

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5 0

3 years ago

4 Questions:

marusya05 [52]

Answer:

1) 3.0 moles.

2) 2.0 moles.

3) 2.0 moles of H atoms.

4) 4. 6.02 x 10²³.

Explanation:

Q1: How many moles of chlorine are present in 3 moles of MgCI₂?

MgCl₂ is dissociated according to the equation:

MgCl₂ → Mg + Cl₂.

Every 1.0 mole of Mg is dissociated to 1.0 mol of Mg and 1.0 mol of Cl₂.

∵ 1.0 mol of MgCl₂ gives 1.0 mol of Cl₂.

∴ 3.0 mol of MgCl₂ gives 3.0 mol of Cl₂.

Q2: How many moles of H₂0 are needed to produce 1 mole of O₂ in the following equation? 2H₂O → 2H₂ + O₂.

From the balnced equation:

2H₂O → 2H₂ + O₂.

2.0 moles of H₂O produce 2.0 moles of H₂ and 1.0 mole of O₂.

∴ We need 2.0 moles of H₂O to produce 1.0 mole of O₂.

Q3: How many moles of hydrogen atoms are present in 1 mole of H2 gas?

H₂ is dissociated according to:

H₂ → 2H.

1.0 mol of H₂ is dissociated to produce 2 atoms of H.

∴ 1.0 mol of H₂ contains 2.0 moles of H atoms.

Q4: How many atoms or molecules are in a mole?

It is known that every mole of any compound contains Avogadro's number of atoms or molecules (6.022 x 10²³).

So, the answer is: 4. 6.02 x 10²³.

8 0

3 years ago