Question

A chemist dissolves 776. mg of pure sodium hydroxide in enough water to make up 90. ml. of solution. Calculate the pH of the solution. (The temperature of the solution is 25 $^\circ$C.) Be sure your answer has the correct number of significant digits.

          A chemist dissolves 776. mg of pure sodium hydroxide in enough water to make up 90. ml. of solution. Calculate the pH of the solution. (The temperature of the solution is 25 $^\circ$C.)
Be sure your answer has the correct number of significant digits.

A chemist dissolves 776. mg of pure sodium hydroxide in enough water to make up 90. ml. of solution. Calculate the pH of the solution. (The temperature of the solution is 25 ^∘C.)
Be sure your answer has the correct number of significant digits.

Added by Sarah F.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adedamola Opalade

03/17/2022

Step 1

Molarity (M) = moles of solute / liters of solution First, we need to convert the mass of sodium hydroxide to moles. The molar mass of NaOH is 22.99 g/mol (for Na) + 15.999 g/mol (for O) + 1.008 g/mol (for H) = 39.997 g/mol So, 776 mg of NaOH is equal to 0.776 Show more…

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A chemist dissolves 776 mg of pure sodium hydroxide in enough water to make up 90 mL of solution. Calculate the pH of the solution. The temperature of the solution is 25°C. Be sure your answer has the correct number of significant digits.