Ask question

Ask question

All categories

4 years ago

9

What is the ph of a 7.5×10-3m oh- solution? ph=?

1 answer:

BlackZzzverrR [31]4 years ago

7 0

We will assume complete dissociation.
Since we have the molarity of OH solution, we can calculate the p(OH) as follows:
p(OH) = -log(molarity of OH) = -log(<span>7.5×10-3) = 2.1249

It is known that: p(H) + p(OH) = 14
Therefore, p(H) can be calculated as follows:
p(H) = 14 - p(OH) = 14 - 2.1249 = 11.875</span>

You might be interested in

How many L are in 1,500cm^3<br><img src="https://tex.z-dn.net/?f=1500%7Bcm%7D%5E%7B3%7D%20%3D%20%5C%3A%20...%20%20%5C%3A%20liter

irga5000 [103]

1.5 liters are in 1,500cm^3.

8 0

3 years ago

????.?<br><br><br> .?.?<br> .<br> I have some question on Alef website

Andrew [12]

B. crust, middle, core

8 0

3 years ago

Read 2 more answers

What is the electron configuration for magnesium (Mg)?

AveGali [126]

Magnesium has atomic no 12

Electronic configuration given by

1s²2s²2p⁶3s²

Or

[Ne]3s²

6 0

2 years ago

1<br> According to the text, what is reduction?

spayn [35]

You forgot to attach the text

BTW reduction is the action or fact of making a specified thing smaller or less in amount, degree, or size.

8 0

3 years ago

(2pts) During the Purification of Lactate Dehydrogenase (LDH) experiment, you will need 50ml of buffer A150. Buffer A150 is 30mM

torisob [31]

Answer:

The answer is " $20 \ mL$ "

Explanation:

Given:

Molarity= number of moles

because it is 1 Liter

$\to \frac{0.03\ moles}{1.5 moles}=0.02\ L= 20 \ mL \ of\ Tris\\\\$

therefore,

it takes 20 mL of Tris.

$\to \frac{0.150 \ moles}{5\ moles} =0.03\ L\\\\$

$= 30 \ mL \ of\ Nacl$

So, take $20 \ mL\ of\ NaCl.$

6 0

3 years ago