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Neporo4naja [7]
3 years ago
6

What is the value of the equilibrium constant for this redox reaction? 2Ag+(aq) + Zn(s) → 2Ag(s) + Zn2+(aq) E = +1.56 V K = 2.25

× 10-26 K = 2.25 × 1026 K = 5.04 × 10-52 K = 5.04 × 1052
Chemistry
2 answers:
bonufazy [111]3 years ago
7 0
I think the answer is 5.04x1052. I hope this helps
Grace [21]3 years ago
4 0

Answer:

Answer:K = 5.04 × 10⁵²

Explanation:

The relation between equilibrium constant and emf is:

E^{0}_{cell} = \frac{0.0592}{n}  (logK)

Given

E^{0}_{cell} = 1.56

n = 2 (for the given reaction)

Putting values

1.56=\frac{0.0592}{2}(logK)

logK=52.70

K = 5.04 × 10⁵²

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Answer:

2.87 liter.

Explanation:

Given:

Initially volume of balloon = 4.3 liter

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Question asked:

What volume will the gas in the balloon occupy at 250 K ?

Solution:

By using:

Pv =nRT

Assuming pressure as constant,

V∝ T

Now, let  K is the constant.

V = KT

Let initial volume of balloon , V_{1} = 4.3 liter

1000 liter = 1 meter cube

1 liter = \frac{1}{1000} m^{3} = 10^{-3} m^{3

4.3 liter = 4.3\times10^{-3}=4.3\times10^{-3} m^{3}

And initial temperature of balloon, T_{1} = 350 K

Let the final volume of balloon is V_{2}

And as given, final temperature of balloon, T_{2} is 250 K

Now, V_{1} = KT_{1}

4.3\times10^{-3}=K\times350\ (equation\ 1 )

V_{2} = KT_{2}

=K\times250\ (equation 2)

Dividing equation 1 and 2,

\frac{4.3\times10^{-3}}{V_{2} } =\frac{K\times350}{K\times250}

K cancelled by K.

By cross multiplication:

350V_{2} =4.3\times10^{-3} \times250\\V_{2} =\frac{ 4.3\times10^{-3} \times250\\}{350} \\          = \frac{1075\times10^{-3}}{350} \\          =2.87\times10^{-3}m^{3}

Now, convert it into liter with the help of calculation done above,

2.87\times10^{-3} \times1000\\2.87\times10^{-3} \times10^{3} \\2.87\ liter

Therefore, volume of the gas in the balloon at 250 K will be  2.87 liter.

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