Reactions of acids

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Question 33

Medium

Butanedioic acid is a solid at room temperature.

Calculate the mass of butanedioic acid ( $H2C4H4O4\text{H}_2\text{C}_4\text{H}_4\text{O}_4$ ) needed to make $cm3250\text{ cm}^3$ of a solution with concentration $mol/dm30.0500\text{ mol/dm}^3$ .

Relative formula mass ( $M_r$ ): $H2C4H4O4=118\text{H}_2\text{C}_4\text{H}_4\text{O}_4 = 118$

[2]

A student found that $cm325.0\text{ cm}^3$ of a sodium hydroxide solution was neutralised by $cm318.50\text{ cm}^3$ of the $mol/dm30.0500\text{ mol/dm}^3$ butanedioic acid solution.

The equation for the reaction is:

$H2C4H4O4+2NaOH→Na2C4H4O4+2H2O\text{H}_2\text{C}_4\text{H}_4\text{O}_4 + 2 \text{NaOH} \rightarrow \text{Na}_2\text{C}_4\text{H}_4\text{O}_4 + 2\text{H}_2\text{O}$

Calculate the concentration of the sodium hydroxide solution in $mol/dm3\text{mol/dm}^3$ .

[3]

Reactions of acids

Question 33

Reactions of acids Questions

Reactions of acids

Question 33

Reactions of acids Questions