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Charra [1.4K]
3 years ago
5

Suppose 0.035 moles of HCl is dissolved in enough water to produce 750 mL of solution. What is the pH

Chemistry
1 answer:
zhuklara [117]3 years ago
5 0

Answer:

pH = 1.33

Explanation:

Because HCl is a strong acid, each mole of HCl will completely dissociate into H⁺ and Cl⁻ species.

Now we calculate the molar concentration (molarity) of H⁺:

  • Molarity = moles / volume

(750 mL ⇒ 750 / 1000 = 0.750 L)

  • Molarity = 0.035 moles / 0.750 L
  • Molarity = 0.0467 M

Then we calculate the pH of the solution:

  • pH = -log [H⁺]
  • pH = -log (0.0467 M)
  • pH = 1.33
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Answer:

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Explanation:

Hello!

In this case, since the net ionic equation of a chemical reaction shows up the ionic species that result from the simplification of the spectator ions, which are those at both reactants and products sides, we take into account that aqueous species ionize into ions whereas liquid, solid and gas species remain unionized. In such a way, for the reaction of cesium phosphate and silver nitrate we can write the complete molecular equation:

Cs_3PO_4(aq)+3AgNO_3(aq)\rightarrow Ag_3PO_4(s)+3CsNO_3(aq)

Whereas the three aqueous salts are ionized in order to write the following complete ionic equation:

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PO_4^{3-}(aq)+3Ag^+(aq)\rightarrow Ag_3PO_4(s)

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How would you prepare 500 mL of 0.360 M solution of CaCl2 from<br> solid CaCl2?
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We need to measure 20.0 grams of CaCl₂ to prepare 500 mL of 0.360 M solution.

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