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Rashid [163]
3 years ago
15

Which one of the following salts has the highest molar solubility in water?

Chemistry
1 answer:
svetlana [45]3 years ago
4 0

Answer:

Correct option is

C

Ag

2

CO

3

; K

sp

=6.2×10

−12

(A) For CaCO

3

,S=

Ksp

=

8.7×10

−9

=9.3×10

−5

M

(B) For CuS,S=

Ksp

=

8.5×10

−45

=9.2×10

−23

M

(C) For Ag

2

CO

3

,S=(Ksp/4)

1/3

=(6.2×10

−12

/4)

1/3

=1.15×10

−4

M

(D) For Pb(IO

3

)

2

,S=(Ksp/4)

1/3

=(2.6×10

−13

/4)

1/3

=4×10

−5

M

Hence, Ag

2

CO

3

has the greatest molar solubility in pure water.

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MrMuchimi

Answer:

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Explanation:

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3 years ago
A sample of N2 gas in a flask is heated from 27 Celcius to 150 Celcius. If the original gas is @ pressure of 1520 torr, what is
Romashka [77]

Answer:

\large \boxed{\text{B.) 2.8 atm}}

Explanation:

The volume and amount are constant, so we can use Gay-Lussac’s Law:

At constant volume, the pressure exerted by a gas is directly proportional to its temperature.

\dfrac{p_{1}}{T_{1}} = \dfrac{p_{2}}{T_{2}}

Data:

p₁ = 1520 Torr; T₁ =   27 °C

p₂ = ?;               T₂ = 150 °C

Calculations:

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T₁ = (  27 + 273.15) K = 300.15 K

T₂ = (150 + 273.15) K = 423.15 K

(b) Calculate the new pressure

\begin{array}{rcl}\dfrac{1520}{300.15} & = & \dfrac{p_{2}}{423.15}\\\\5.064 & = & \dfrac{p_{2}}{423.15}\\\\5.064\times423.15&=&p_{2}\\p_{2} & = & \text{2143 Torr}\end{array}\\

(c) Convert the pressure to atmospheres

p = \text{2143 Torr} \times \dfrac{\text{1 atm}}{\text{760 Torr}} = \textbf{2.8 atm}\\\\\text{The new pressure reading will be $\large \boxed{\textbf{2.8 atm}}$}

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zheka24 [161]
Are you referring to DNA? 
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Answer:

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Explanation:

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