Answer:
13.25
Explanation:
There is some info missing. I think this is the original question.
<em>A chemist dissolves 707.mg of pure sodium hydroxide in enough water to make up 100.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.</em>
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Step 1: Calculate the molarity of NaOH
M = mass of solute / molar mass of solute × liters of solution
M = 0.707 g / 40.0 g/mol × 0.100 L
M = 0.177 M
Step 2: Write the basic dissociation reaction
NaOH → Na⁺ + OH⁻
The molar ratio of NaOH to OH⁻ is 1:1, Then, [OH⁻] = 0.177 M.
Step 3: Calculate the pOH
pOH = -log [OH⁻]
pOH = -log 0.177
pOH = 0.752
Step 4: Calculate the pH
pH + pOH = 14.00
pH = 14 - pOH = 14.00 - 0.752
pH = 13.25
Answer:
conflict among characters
Explanation:
Answer is A
the cell potential is the measure of the potential difference between two half cells in an electrochemical cell. the potential difference is caused by the ability of electrons to flow from one half cell to the other.