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3 years ago

Is it possible for a molecular with polar bonds to be nonpolar?

1 answer:

5 0

A molecule will either be polar or nonpolar. if the molecule has unevenly distributed charge, it has a pole and is polar. if charge is evenly distributed it is a nonpolar molecule because the net charge is 0.

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Solutions of Cu2+ turn blue litmus red because of the equilibrium: Cu(H2O)62+(aq) + H2O(l) ↔ Cu(H2O)5(OH)+(aq) + H3O+(aq) for wh

Elanso [62]

Answer: The pH of 0.10 M $Cu(NO_{3})_{2}(aq)$ is 4.49.

Explanation:

Given: Initial concentration of $Cu(H_{2}O)^{2+}_{6}$ = 0.10 M

$K_{a} = 1.0 \times 10^{-8}$

Let us assume that amount of $Cu(H_{2}O)^{2+}_{6}$ dissociates is x. So, ICE table for dissociation of $Cu(H_{2}O)^{2+}_{6}$ is as follows.

$Cu(H_{2}O)^{2+}_{6} \rightleftharpoons [Cu(H_{2}O)_{5}(OH)]^{+} + H_{3}O^{+}$

Initial: 0.10 M 0 0

Change: -x +x +x

Equilibrium: (0.10 - x) M x x

As the value of $K_{a}$ is very small. So, it is assumed that the compound will dissociate very less. Hence, x << 0.10 M.

And, (0.10 - x) will be approximately equal to 0.10 M.

The expression for $K_{a}$ value is as follows.

$K_{a} = \frac{[Cu(H_{2}O)^{2+}_{6}][H_{3}O^{+}]}{[Cu(H_{2}O)^{2+}_{6}]}\\1.0 \times 10^{-8} = \frac{x \times x}{0.10}\\x = 3.2 \times 10^{-5}$

Hence, $[H_{3}O^{+}] = 3.2 \times 10^{-5}$

Formula to calculate pH is as follows.

$pH = -log [H^{+}]$

Substitute the values into above formula as follows.

$pH = -log [H^{+}]\\= - log (3.2 \times 10^{-5})\\= 4.49$

Thus, we can conclude that the pH of 0.10 M $Cu(NO_{3})_{2}(aq)$ is 4.49.

8 0

3 years ago

Balance the following chemical equations.

solong [7]

Answer:

1) 2,1,2

2) 2,2,1,1

3)2,1,2

4)2,2,3

5)2,3,1,3

6 [ I cannot answer that]

7)6,1,2

3 0

4 years ago

Unstable isotopes occur when the strong force is unable to overcome the

Gelneren [198K]

Elecstrostatic force

8 0

3 years ago

Is Gold (Au) soluble?

Yakvenalex [24]

Answer:

yes

Explanation:

5 0

3 years ago

How many optical isomers this molecule have?<br> a) 12<br> b)27<br> c)16<br> d)4

skelet666 [1.2K]

Answer:

letter D

Explanation:

hope this helps

4 0

3 years ago

Read 2 more answers