5 Acid Bases Titrations SAQ1

A solution whose concentration is accurately known.

A primary standard is a water-soluble substance that is stable and is available in pure form. Anhydrous sodium carbonate (Na2CO3) is a common primary standard because it meets these criteria.

To remove any impurities that may affect the accuracy of the titration.

<p>Phenolphthalein</p> Signup and view all the answers

<p>Using a pipette filler to bring the solution into the pipette.</p> Signup and view all the answers

<p>To prevent contamination of the solution with other substances.</p> Signup and view all the answers

<p>To indicate the endpoint of the titration.</p> Signup and view all the answers

<p>To provide a clear background for viewing the color change of the indicator.</p> Signup and view all the answers

<p>To prevent any acid or alkali from being left on the sides of the flask and affecting the reaction</p> Signup and view all the answers

<p>To prevent spills and ensure that the solution is poured accurately into the flask</p> Signup and view all the answers

<p>To ensure that the solution reaches the exact volume marked on the flask</p> Signup and view all the answers

<p>It releases vapour when a concentrated bottle is opened</p> Signup and view all the answers

<p>To detect the endpoint of the reaction, marked by a colour change</p> Signup and view all the answers

<p>To prevent a large percentage error, as the colour change would occur too quickly if the acid was not diluted</p> Signup and view all the answers

<p>To work out the concentration of the titrated vinegar</p> Signup and view all the answers

<p>Methyl Orange</p> Signup and view all the answers

<p>It absorbs water vapour from the air</p> Signup and view all the answers

<p>Add dropwise so the endpoint will be accurately detected.</p> Signup and view all the answers