What happens when sodium hydroxide and copper sulfate is combined?

Question

also, if silver nitrate and sodium chloride is combined in a test tube, what is its product?

another question again, we had this experiment where we add a zinc granule to a testube filled with 1/3 diluted sulfuric acid. then, we add a few drops of copper sulfate as its catalyst. I was told to cover the mouth of the testube with my thumb for 10 mins and i feel something like a gas. afterwards, i was told to burn the gas in the bunsen burner an we heard something like "BOOM!"

the question is.. WHAT GAS IS IT?

WHERE DOES THE GAS COME FROM?

Answer 1

ARE YOU STILL ALIVE.

Leave it to us professionals mate.

Answer 2

CuSO4(aq) + 2NaOH(aq) --> Cu(OH)2(s) + Na2SO4(aq)

[the copper hydroxide forms as a blue precipitate]

NaCl(aq) + AgNO3(aq) --> AgCl(s) + NaNO3(aq)

[the silver nitrate forms as a white precipitate]

The gas formed was hydrogen ... formed by the reaction:

Zn(s) + H2SO4(aq) --> ZnSO4(aq) + H2(g)

Answer 3

1.  This is a double replacement reaction with the formula of

AB + CD = BC (or CB) + AD.  In your formula, A = Na, B = OH, C = Cu, D = SO4.  Use the formula and put them together and balance: 2NaOH + CuSO4 = Cu(OH)2 + Na2SO4

2.  AgNO3 + NaCl is another double replacement reaction so label your parts: A = Ag, B = NO3, C = Na, D = Cl now use formula to find product: AgNO3 + NaCl = NaNO3 + AgCl

Sodium nitrate is a salt that is very soluble in water.  Silver chloride is a white crystaline solid that has very low water solubility.  So if you want to separate them, add some water and the sodium nitrate will disolve in it.  Pour it through a filter paper and the sodium nitrate in solution will pass through leaving the silver chloride crystals.  Then heat the solution and the water will evaporate, leaving the sodium nitrate salt.

3. This is a single replacement reaction with the formula A + BC = B + AC. Using your information,  A = zinc, B = hydrogen, and C = sulfate.  Using the formula put it together and balance:  Zn + H2SO4 = H2 + ZnSO4.  The gas was hydrogen.  As you can see, when Zinc was added to the sulfuric acid solution, it kicked hydrogen off and took its place, leaving hydrogen gas.  The boom you heard was the combustion of the hydrogen.  The formula for combustion is fuel (hydrogen) + oxygen + heat as catalyst = H2O (often in vapor form) and CO2.