derioncapers2346
05.03.2021 •
Chemistry
What volume of 1.75 M hydrochloric acid (HCl aq) must be diluted with water to prepare 0.500 L of 0.250 M hydrochloric acid?
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Ответ:
Explanation:
Hello there!
In this case, since we need to dilute the 1.75-M HCl, and the total number of moles remain unchanged, we can write:
And in terms of volume and concentration:
Thus, we can solve for the volume of the concentrated HCl as shown below:
Therefore, we plug in the data to get:
Best regards!
Ответ:
Each component in a mixture contributes a fraction to the total number of moles in the mixture. This fraction is called the _mole_ fraction of the component. In a mixture of gases, this fraction is proportional to the _mole_ pressure for each gas present.