4.2 Reactions of acids

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Question 33

An analyst in a laboratory performs a titration to determine the concentration of a sodium carbonate ( $Na2CO3\text{Na}_2\text{CO}_3$ ) solution.

The analyst measures $cm325.0\text{ cm}^3$ of the sodium carbonate solution with a concentration of $g/dm34.24\text{ g/dm}^3$ . Calculate the mass of sodium carbonate in this sample. Use the conversion: $cm31\text{ dm}^3 = 1000\text{ cm}^3$ .

[2]

During the titration, the following volumes of dilute hydrochloric acid were recorded to neutralize the sodium carbonate:

Trial 1: $cm324.15\text{ cm}^3$
Trial 2: $cm321.20\text{ cm}^3$
Trial 3: $cm324.25\text{ cm}^3$
Trial 4: $cm324.20\text{ cm}^3$

Identify the anomalous trial and calculate the mean volume of acid used, using only the concordant results.

[3]

An analyst in a laboratory performs a titration to determine the concentration of a sodium carbonate ( $Na2CO3\text{Na}_2\text{CO}_3$ ) solution.

[2]

During the titration, the following volumes of dilute hydrochloric acid were recorded to neutralize the sodium carbonate:

Trial 1: $cm324.15\text{ cm}^3$
Trial 2: $cm321.20\text{ cm}^3$
Trial 3: $cm324.25\text{ cm}^3$
Trial 4: $cm324.20\text{ cm}^3$

Identify the anomalous trial and calculate the mean volume of acid used, using only the concordant results.

4.2 Reactions of acids

Question 33

Markscheme

4.2 Reactions of acids

Question 33

Markscheme

4.2 Reactions of acids

Question 33

4.2 Reactions of acids Questions

4.2 Reactions of acids

Question 33

4.2 Reactions of acids Questions