What do you observe at the bottom of the test tube?

A meniscus is what happens when you put a liquid into a container. When you put water in a beaker or test tube, you see a curved surface. So, you have to hold the tube up level with your eye, and look through it to see the bottom part of the meniscus.

What happens when copper sulfate and sodium hydroxide react?

When sodium hydroxide, a strong base, reacts with the salt, copper sulfate, a blue precipitate of copper hydroxide is produced with the ions of sodium sulfate in solution. It is a double displacement reaction, as well as a precipitation reaction. It is not a dangerous reaction.

What happens when you mix copper sulfate and sodium carbonate?

When copper sulfate reacts with sodium carbonate, it forms the precipitate basic copper carbonate. This is a compound that contains 2 positively charged copper ions, 2 hydroxide ions, and a carbonate ion.

What happens when you mix sodium hydroxide and copper II nitrate?

Here, sodium hydroxide (NaOH) is added to copper(II) nitrate (Cu(NO3)2). The result is a blue precipitate.

How you will test the presence of gases in both the test tubes?

We can identify it by checking anode and cathode at anode oxygen atoms are situated and at cathode hydrogen atoms are situated.

What does a test tube measure?

A typical test tube has a rounded bottom, but NMR tubes and certain other test tubes have a flat bottom, so the volume contained in them is a cylinder. You can get a reasonably accurate measure of volume by measuring the internal diameter of the tube and the height of the liquid.

What do you observe when sodium hydroxide is treated with zinc sulphate?

white
Thus, when sodium hydroxide reacts with zinc sulphate a precipitate of zinc hydroxide (Zn(OH)2) is formed. The zinc hydroxide precipitate is white in colour. When excess sodium hydroxide is added to a solution of zinc sulphate the precipitate of zinc hydroxide which is formed reacts with sodium hydroxide.

What do you observe when copper hydroxide is heated?

Heating copper hydroxide produces copper oxide, CuO, a black solid. Copper oxide dissolves in acid, regenerating the copper (II) ion, which once again binds to water.

Is sodium carbonate a base?

– Carbonate ion is a nucleophile so it would easily react with protons to form carbonic acid, H2CO3. – Now, we know that sodium hydroxide is a strong base and carbonic acid is a weak acid. – Therefore, sodium carbonate is a basic salt because it is a salt derived from a weak acid and strong base.

What type of reaction is CuSO4 and naco3?

double displacement reaction
Na2CO3 + CuSO4is a double displacement reaction. The Na in Na2CO3 and the Cu in CuSO4 switch places in the reaction.

What type of reaction is copper II hydroxide?

decomposition reaction
STEP #3 – Conversion of Copper (II) Hydroxide to an Insoluble Oxide: Heat applied to the copper (II) hydroxide causes black, insoluble copper (II) oxide, Cuo, to form. This reaction is a decomposition reaction.

What is the type of reaction that occurs between copper II nitrate and sodium hydroxide to produce copper II hydroxide and sodium nitrate?

Precipitation reaction
Precipitation reaction of sodium hydroxide and copper(II) nitrate. Colorless sodium hydroxide solution is added to blue copper(II) nitrate solution.

What is the reaction between sodium hydroxide and copper solution?

(blue solution + colourless solution → blue precipitate + colourless solution) Copper solutions form a blue precipitate with sodium hydroxide. Different transition metals form different coloured precipitates. he reaction is not dangerous in itself, apart from the hazards associated with the chemicals used.

What is the reaction between na2naoh and CuSO4?

2NaOH + CuSO4 –> Cu (OH)2 + Na2SO4. This is a double displacement as well as precipitation reaction. According to my knowledge, this reaction should not be so dangerous. When sodium hydroxide, a strong base, reacts with the salt, copper sulfate, a blue precipitate of copper hydroxide is produced with the ions of sodium sulfate in solution.

Why does Copper not react with NaOH in this experiment?

Explain why. Initially, a blue precipitate is formed. But because it was not centrifuged, the reaction did not fully complete in the tube, and reversed somewhat from sitting still, so some copper will remain within the the Cu (II) hydroxide and not react with the NaOH, lessening the percent recovery of copper from the experiment.

What is the reaction between magnesium sulfate and copper sulfate?

Magnesium Sulfate: a clear water soluble aqueous solution. Hydrogen gas: Second reaction occurs where the magnesium metal is added to the acidic copper sulfate. Bubbles of hydrogen gas will be observed where the magnesium metal reacts with the sulfuric acid. 1. Measure copper 2. Add Nitric Acid 3. Add Sodium Hydroxide 4. Centrifuge 5.