reaction 2 metal oxide with an acid

metal oxide + acid →

salt and water

Neutralisation reaction

Method

1. Using pH paper determine the pH of the acid at the start, record this in your results.

2. Using a measuring cylinder, measure out 25 cm° of sulfuric acid into the small beaker

3. Collect approximately 2 g of copper(lI) oxide on a watch glass

4. Using hot water from a kettle, fill 1/3 of the larger beaker with hot water.

5. Warm the sulfuric acid beaker by letting it rest (carefully) in the hot water bath (leave for 2 min).

6. Carefully remove the small beaker and add copper(Il) oxide to the acid slowly, stir with a glass rod

7. Keep adding the copper(lI) oxide, until there is some left over at the bottom of the beaker. Let the beaker sit for 2 min to allow the black powder to settle.

observation

solution changes from colourless to a pale blue and the copper oxide disappears at the start, but then once all the acid has reaction its a black powder at bottoms

the ph is now slightly acidic