Can anyone help me with the Post lab questions? They are all in reference to the

Question

Can anyone help me with the Post lab questions? They are all in reference to the pre lab questions which I did already. Thanks.

Experiment 7: CHEMICAL REACTIONS Pre-Lab Exercises 1. Balance the following reactions: a. NaOH + (NH4)3PO4 NasPO4 + H2O + NH3 b. C2H6O+02 C. Mg:N2 + H2O d. Ss AsFs e. FeS2 + H20 + 02 FesOa + H2SO4 CO2 + H2O Mg(OH)2 + NH3 S16(AsF6)2 + AsF, 2. A chemical reaction is observed to occur with the evolution of a colorless, odorless gas. When a match is introduced into the top of the test tube in which the reaction is proceeding, the flame is immediately extinguished. What gas is being evolved? Post-Lab Questions 1. Which of the reactions in Part' I ma be called precipitation reactions? Give reasons for 2. Which of the reactions in Part I may be called a decomposition reaction? Give reasons calling them such. for calling the reaction such do you expect a precipitate to form? Explain. 3. Suppose you mix a solution of sodium nitrate and a solution of barium chloride together,

Explanation / Answer

(1) (a) 3 NaOH + (NH4)3PO4 ------> Na3PO4 + 3 H2O + 3 NH3 (double replacement)

(b) C2H6O + 3 O2 -----> 2 CO2 + 3 H2O (Combustion reaction)

(c) 2 S8 + 3 AsF5 ------> S16(AsF6)2 + AsF3 (double replacement)

(d) 4 FeS2 + 15 O2 + 14 H2O ----> 4 Fe(OH)3 + 8 H2SO4

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.