Q11.3-19E

Question

Calculate the percent by mass of KBr in a saturated solution of KBr in water at 10 °C. See Figure for useful data, and report the computed percentage to one significant digit.

Step-by-Step Solution

Verified

Answer

The percentage by mass of KBr in a saturated solution of KBr in water at 10^oC is 40%.

1Step 1: Solubility

Solubility is defined as the solute which dissolves in the solvent and forms a solution. The solution can be different as some solutions can conduct electricity and some cannot.

2Step 2: Explanation for Ions Interaction

As per the graph,

At \({\rm{ 10 ^\circ C,}}\)\) the solubility of KBr in water is approximately 60g per 100g of water.

\(\begin{array}{l}{\rm{\% Mass of KBr = }}\frac{{{\rm{Mass of solute}}}}{{{\rm{Total mass of Solution}}}} \times {\rm{100}}\\{\rm{\% Mass of KBr = }}\frac{{{\rm{60g KBr}}}}{{{\rm{(60 + 100)g}}}} \times {\rm{100 = 40\% }}\end{array}\)

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