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zhuklara [117]
3 years ago
8

Convert 15.6 g Na2Cr2O7 to moles of Na2Cr2O7.

Chemistry
1 answer:
Leviafan [203]3 years ago
3 0

Answer:

261.96754

Explanation:

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If 17. 6 g of hcl are used to produce a 14. 5 l solution, what is the ph of the solution?.
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This problem is providing us with the mass of hydrochloric acid and the volume of solution and asks for the pH of the resulting solution, which turns out to be 1.477.

<h3>pH calculations</h3>

In chemistry, one can calculate the pH of a solution by firstly obtaining its molarity as the division of the moles of solute by the liters of solution, so in this case for HCl we have:

M=\frac{17.6g*\frac{1mol}{36.46g} }{14.5L} \\\\M=0.0333 M

Next, due to the fact that hydrochloric acid is a strong acid, we realize its concentration is nearly the same to the released hydrogen ions to the solution upon ionization. Thereby, the resulting pH is:

pH=-log(0.0333)\\\\pH=1.477

Which conserves as much decimals as significant figures in the molarity.

Learn more about pH calculations: brainly.com/question/1195974

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<span>47.88 g/mol is the awsner your welcome</span>
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