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2 years ago

Calculate the pH of a solution that has a [OH−] of 2.6 × 10^−6 M.

Chemistry

1 answer:

TiliK225 [7]2 years ago

7 0

Answer:

A. 8.4

Explanation:

[OH⁻] = 2.6 × 10⁻⁶ Take the negative log of each side

-log[OH⁻] = pOH = 5.59 Apply the pH/pOH relation

pH + pOH = 14.00 Insert the value of pOH

pH + 5.59 = 14.00 Subtract 5.59 from each side

pH = 14.00 -5.59 = 8.41

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D. They are malleable.

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2 years ago

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Draw the products of the complete hydrolysis of an acetal. Draw all products of the reaction.

jolli1 [7]

Answer: the product is ketone or aldehyde

Explanation:

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3 years ago

Given 6.98 x 10 4 power grams of iron, calculate the moles of iron present

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Answer:

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Explanation:

∵ no. of moles of Fe = mass of Fe/atomic weight of Fe.

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2 years ago

If the reactants are 10 kg what is the mass of the products

nlexa [21]

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2 years ago

Name two compounds with more exothermic lattice energies than scandium oxide and justify your choice.

N76 [4]

Answer:

1 . $Al_2O_3$

2. $TiO_2$

Explanation:

The more stable the ionic compound, the more is it lattice energy.

The more the charge on the cation and the anion, the greater is the lattice energy.
The less the size of the cation and the anion, the greater is the lattice energy.

Scandium oxide ( $Sc_2O_3$ ) is an oxide in which $Sc^{3+}$ behaves as cation and $O^{2-}$ behaves as anion.

The compounds which has higher lattice energy than scandium oxide are:

1 . $Al_2O_3$

This is because the charge are same on the cation and the anion as in the case of the Scandium oxide but the size of the cation $Al^{3+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

2. $TiO_2$

This is because the charge on the cation $Ti^{4+}$ is greater than that of $Sc^{3+}$ and also the size of the cation $Ti^{4+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

3 0

3 years ago