A piece of unknown metal with mass 68.6 g is heated to an initial temperture of 100°C and dropped in 84 g of water (with an init
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pH of solution = 9.661
<h3>Further explanation </h3>pH is the degree of acidity of a solution that depends on the concentration of H⁺ ions. The greater the value the more acidic the solution and the smaller the pH.
pH = - log [H⁺]
So that the two quantities between pH and [H⁺] are inversely proportional because they are associated with negative values.
pOH=-log[OH⁻]
pH+pOH=pKw