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3 years ago

What is the pH of a solution with (H'] = 1.25 x 10-10 M?

Chemistry

1 answer:

Gelneren [198K]3 years ago

7 0

Answer:

9.90

Explanation:

ph= -log (H+) = -log( 1.25×10^-10)

which equals to 9.903

so the answer is 9.90

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2 years ago

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3 years ago

Write the structural formula for a primary, a secondary, and a tertiary constitutionally isomeric alcohol of the molecular formu

9966 [12]

Answer:

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3 years ago

How many moles are contained in 70. milliliters of a 0.167 M solution of p-toluidine hydrochloride? Enter only the number to two

kramer

<u>Answer:</u> The amount of p-toluidine hydrochloride contained is 2.4 moles.

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$

Molarity of p-toluidine hydrochloride solution = 0.167 M

Volume of solution = 70. mL

Putting values in equation 1, we get:

$0.167=\frac{\text{Moles of p-toluidine hydrochloride}\times 1000}{70}\\\\\text{Moles of p-toluidine hydrochloride}=\frac{(0.167\times 70}{1000}=2.38mol=2.4mol$