A systematic error due to absorption of carbon dioxide by a base. Group of answer choices Carbonate error Titration error Random error Indeterminate error
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Step 1: The systematic error in this case is due to the absorption of carbon dioxide by a base, leading to a decrease in the effective concentration of the base. Show more…
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Riaz A.
What is the percent error for the value of the mass of carbon dioxide? The percent error is calculated by subtracting the value from lab calculation from the periodic table value, dividing it by the periodic table value, and then multiplying by 100. The answer should be provided as a number with two significant figures, representing the percent.
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Sodium hydroxide used to make standard $\mathrm{NaOH}(\mathrm{aq})$ solutions for acid-base titrations is invariably contaminated with some sodium carbonate. (a) Explain why, except in the most precise work, the presence of this sodium carbonate generally does not seriously affect the results obtained, for example, when $\mathrm{NaOH}(\mathrm{aq})$ is used to titrate $\mathrm{HCl}(\mathrm{aq}) .$ (b) Conversely, show that if $\mathrm{Na}_{2} \mathrm{CO}_{3}$ comprises more than $1 \%$ to $2 \%$ of the solute in NaOH(aq), the titration results are affected.
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