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3 years ago

Calculate the solubility product constant, Ksp, of lead(II) chloride, PbCl2, which has a

Chemistry

1 answer:

V125BC [204]3 years ago

8 0

Answer:

0.0159m

Explanation:

9 M

Explanation:

Lead(II) chloride,

PbCl

, is an insoluble ionic compound, which means that it does not dissociate completely in lead(II) cations and chloride anions when placed in aqueous solution.

Instead of dissociating completely, an equilibrium rection governed by the solubility product constant,

, will be established between the solid lead(II) chloride and the dissolved ions.

PbCl

2(s]

⇌

(aq]

−

(aq]

Now, the molar solubility of the compound,

, represents the number of moles of lead(II) chloride that will dissolve in aqueous solution at a particular temperature.

Notice that every mole of lead(II) chloride will produce

mole of lead(II) cations and

moles of chloride anions. Use an ICE table to find the molar solubility of the solid

PbCl

2(s]

⇌

(aq]

−

(aq]

−

(+s)

(

)

−

By definition, the solubility product constant will be equal to

[

]

⋅

[

−

]

⋅

(

)

This means that the molar solubility of lead(II) chloride will be

1.6

⋅

−

⇒

= √ 1.6 4 ⋅ 10 − 5 = 0.0159 M

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N2O5 decomposes to form NO2 and O2 with first-order kinetics. The initial concentration of N2O5 is 3.0 M and the reaction runs f

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where,

k = rate constant = $5.89\times 10^{-3}\text{ min}^{-1}$

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3 years ago

1. write the complete chemical symbol for the ion with 14 protons 15 neutrons and 18 electrons

motikmotik

Answer:

1. $Si^{-4}$

2. $Co^{+2}$

Explanation:

An ion is formed when an atom that is said to be neutral gains or losses electrons.

It is thought that a negative ion (anion) is produced as it gains electrons and a positive ion (cation) is formed when it loses an electron.

Atomic number is the total number of protons and electrons in a neutral atom.

From the information

Protons = 14

electron = 18

Net Charge = no of proton - no of electron

= 14 - 18 = -4

Mass number = 14 + 15 = 29

Thus, the chemical symbol = $Si^{-4}$

For ion with 27 proton, 32 neutrons and 25 electrons

Net charge = 27 - 25 = +2

Mass number = 27 + 32 = 59

Thus, the chemical symbol = $Co^{+2}$

6 0

2 years ago