The pH of the original solution is 7.0.
<h3>What is pH?</h3>
- An aqueous solution's acidity or basicity can be determined using the pH scale, which previously stood for "potential of hydrogen."
- In comparison to basic or alkaline solutions, acidic solutions are measured to have lower pH values.
- You need to know the hydronium ion concentration in moles per liter to determine the pH of an aqueous solution (molarity).
<h3>Calculation of pH:</h3>
At 25°C, in pure water [H₃O⁺] = 1.0 × 10⁻⁷ M
HCl after four successive ten-fold dilution = (1.0 × 10⁻⁵ M) × (1/10)⁴
= 1.0 × 10⁻⁹ M
[H₃O⁺] from HCl = 1.0 × 10⁻⁹ M ≪ 1.0 × 10⁻⁷ M
Hence, the pH of solution is almost entirely depends on the dissociation of water.
pH of the original solution = -log(1.0 × 10⁻⁷) = 7.0
Hence, the pH of the original solution is 7.0.
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The mineral galena is composed of lead(II) sulfide and has an average density of 7.46 g/cm³. Moles of lead(II) sulfide in 1.00 ft³ of galena are 883 mol PbS.
<h3>
What is moles of compound?</h3>
A very large number of molecules, atoms, or other particles are referred to as a "mole," which is a unit of measurement in chemistry. The number of moles in one unit is 6.02214 x 1023, and it is known as Avogadro's Number. These figures are crucial in providing information on the quantity of the constituent elements. A mole of a substance might be as little as a few grams or as much as hundreds of grams.
One mole (or formula unit) of a chemical is equal to 6.022 x 10²³ molecules (ionic). A chemical's molar mass represents the mass of 1 mole of that substance. To put it another way, it tells you how many grams there are in a chemical per mole.
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