Which of the following best describes atoms? *
1 answer:
a. Smallest basic units of matter
<u>Atom</u>: An atom is the smallest particles of a substance which may or may not exist in free state but takes part in chemical reactions.
<u>Molecule</u>: A molecule is a substance which exists in free state but doesn't take part in chemical reactions.
<u>Laws</u><u> </u><u>of</u><u> </u><u>chemical</u><u> </u><u>combination</u><u>:</u><u>-</u>
- Law of conservation of mass
- Law of constant proportions
- Law of multiple proportions
- Law of combining volumes
- Law of reciprocal proportions
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The pH of the diluted HCl solution is 1.3.
Explanation:
Given:
The concentrated HCl solution of 8.0 M. The 1.5 mL of 8.0 M HCl is diluted with water to 250 mL volume.
To find:
The pH of the diluted HCl solution.
Solution
- The concentration of the HCl solution before dilution =
- The volume of the HCl solution taken for dilution =
- The concentration of the HCl solution after dilution =
- The volume of the HCl solution after dilution =
Using the Dilution equation:
The concentration of diluted HCl solution = 0.048 M
In the 1 M solution of HCl, there are 1 M of hydrogen ion, then the concentration of hydrogen ions in 0.048 M of HCl will be:
The pH of the diluted HCl solution :
The pH of the diluted HCl solution is 1.3.
Learn more about the dilution equation here: