First, we shall calculate the total number of moles present in the final solution.
Number of moles in 0.50 m NaCl = molarity * volume = 0.50 * 3.0 = 1.5 moles.
Number of moles in 0.2777m NaCl = molarity * volume = 0.2777 * 9.0 = 0.24993 moles
Total number of moles = 1.5 + 0.24993 = 1.74993 moles
Second, we shall calculate the total volume of the final solution.
Total volume = 3 + 9 = 12 litres.
The molarity = total number of moles / total volume = 1.74993 / 12 = 0.1458 m
<span>This is an example of a double replacement or precipitation reaction. The solutions of potassium carbonate and calcium nitrate both contain dissolved ions so they will appear as clear, colorless solutions. When the two solutions are combined the calcium ions will combine with the carbonate ions to form an insoluble precipitate, which will appear as a white cloudiness. Potassium ions and nitrate ions will remain dissolved in the solution. They're called "spectator ions" because they're present as both reactants and products - they don't participate in the chemical reaction. </span>
Wear a chemical-resistant apron, chemical-resistant gloves and chemical splash goggles at all times when handling HCl to protect your eyes and skin. Concentrated hydrochloric acid is toxic if inhaled, so avoid breathing it in and always handle it while under a fume hood.
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Explanation:
my sources are from everywhere and Im sure you could have found verified sources too
