calculate the ph of 0.01M ca(oh2)
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M/100 calcium hydroxide means 0.01M solution. Calcium hydroxide is a strong base and breaks to give hydroxide ions in aqueous solution as: From this equation, 1 mol of calcium hydroxide gives 2 moles of hydroxide ion
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pH = 12.3
Answer:- M/100 calcium hydroxide means 0.01M solution. Calcium hydroxide is a strong base and breaks to give hydroxide ions in aqueous solution as:
From this equation, 1 mol of calcium hydroxide gives 2 moles of hydroxide ion. So, the concentration of hydroxide ions would also be two times to the given concentration of calcium hydroxide.
0.01MCa(OH)_2(\frac{2molOH^-}{1molCa(OH)_2})0.01MCa(OH)2(1molCa(OH)22molOH−)
= 0.02 M OH^-OH−
pOH is calculated using the formula:
pOH=-log[OH^-]pOH=−log[OH−]
pOH =- log(0.02)
pOH = 1.7
Now, we could calculate the pH using the formula:
pH = 14 - pOH
pH = 14 - 1.7
pH = 12.3
So, the pH of M/100 calcium hydroxide solution is 12.3.
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