A ph of 10 is how many times as basic as a ph of 7

1 answer:

8 0

Again, since the pH scale is logarithmic, in base 10, a whole integer increase in the pH correlates to a solution being 10 times more acidic than the previous integer. For example: A pH of 7 is 10 times more acidic than a pH of 8, and 100 times<span> more acidic than a pH of 9.</span>

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$\% w/w=33.1\%$

Explanation:

Hello,

In this case, since the solution is formed by sodium chloride and water, we understand that for one mole of solution, we have 0.132 moles of sodium chloride and 0.868 moles of water, therefore, by using their molar masses we can compute their masses in the solution:

$m_{NaCl}=0.132molNaCl*\frac{58.44gNaCl}{1molNaCl}=7.714gNaCl\\ \\m_{H_2O}=0.868molH_2O*\frac{18gH_2O}{1molH_2O}=15.624gH_2O$

Thereby, we can compute the weight/weight percent as follows:

$\% w/w=\frac{m_{NaCl}}{m_{H_2O}+m_{NaCl}}*100\%$

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$\% w/w=\frac{7.714g}{7.714g+15.624g}*100\% \\\\\% w/w=33.1\%$

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