3 years ago

When KCL dissolved in ethanol, what is the intermolecular attraction between K+ ions and ethanol molecules?

Chemistry

1 answer:

madam [21]3 years ago

6 0

Answer: Ion-Dipole

Explanation: I took the CK-12 practice and got it right

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The reaction a(g)⇌b(g) has an equilibrium constant of 5.8 and under certain conditions has q = 336. part a what can you conclude

Vika [28.1K]

Answer:

The answer is "As $Q=336$ , at high-temperature $\Delta G_{rxn}>0$ and When $K>1,$ $\Delta G^{\circ}_{rxn}>0$ ."

Explanation:

The equation for the reaction is:

$A(g) \leftrightharpoons B(g)$

$K=5.8\\\\Q=336$

At equilibrium,

$\Delta G^{\circ}_{rxn}>0$ $=-RT \ln \ K$

When k=5.8(>1), the value of $\ln k$ would be positive

So, $\Delta G^{\circ}_{rxn}$ is negative (< 0)

So if K > l, $\Delta G^{\circ}_{rxn}$

If the reaction is not in equilibrium so the equation is :

$\Delta G_{rxn}>0$ = $\Delta G^{\circ}_{rxn}$ $+RT \ln Q$

Substituting the expression:

$\Delta G_{rxn}>0$ $= (-RT \ln K) + RT \ln Q$

$= RT(\ln Q- \ln K)\\= RT(\ln (336)-\ln (5.8))\\= RT(4.06)$

It is the positive value for all temperatures.

So, As Q = 336, at the high temperature $\Delta G_{rxn}>0$ .

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3 years ago

Determine the pH of a 0.188 M NH 3 solution at 25°C. The K b of NH 3 is 1.76 × 10 -5.

Archy [21]

Answer:

pH is 8.52

Explanation:

According to the working in the photo

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3 years ago

This is a graded Quiz and I need all of the answers to be right but I am not sure so I need help this is a 3.08 science Quiz and

Setler79 [48]

Answer:

1 true

Explanation:

bcz it is true

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a little kitten jumps from a tree and hits the ground 2.6 seconds later.with this information calculate the cat's velocity right

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The initial velocity is equal zero
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V = 0 + (9.81 * 2.6)
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cupoosta [38]

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2 years ago