General Chemistry Answers

Write a balanced equation for each of the following:

1) Fe₂O₃ + H₂SO₄ −−> Fe₂(SO₄)₃ + H₂O

2) C₂H₆ + O₂ −−> CO₂ + H₂O

3) Mg_(s) + O_2(g) −−> MgO_(s)

give the products formed when electricity is passed through water containing 2 ml h2so4(or 2gm nacl) . what are the products formed at anode and cathode?

Direction: Solve the following problem. Show your complete solution and the chemical equation. (5 bonus points)

A buffer solution of pH 7.30 will be prepared from 50.00 mL solution of 0.075 M NaH2PO4 (Ka = 6.3 10-8). How many grams of NaH2PO4 must be dissolved in the solution to get the desired pH? (molar mass of NaH2PO4 = 119.0g/mol)

I would like to know what gases are produced from electrolytic etching of galvanized steel using lemon juice and water as the electrolyte.

A standard NaOH solution was prepared by dissolving 0.05 mol of NaOH in 250 mL of

distilled water. 25 mL of the prepared NaOH solution was titrated with 0.15 M H2SO4

solution. Calculate the volume of H2SO4 solution that is required to reach the equivalence

point.

balanced equation to show effect of heat in copper 2 nitrate

what is crystalization

A gaseous mixture contains 414.0 Torr H

2

(g),

414.0 Torr H2⁡(g), 331.3 Torr N

2

(g),

331.3 Torr N2⁡(g), and 75.7 Torr Ar(g).

75.7 Torr Ar(g). Calculate the mole fraction, 𝜒,

χ, of each of these gases.

Container A holds 742 mL

742 mL of an ideal gas at 2.80 atm.

2.80 atm. Container B holds 154 mL

154 mL of a different ideal gas at 4.90 atm.

4.90 atm.

If the gases are allowed to mix together, what is the resulting pressure?