Question

Write balanced equations by predicting the products of the following reactions. Include the physical state of each element or compound. a)Phosphorus burn in chlorine to form phosphorus pentachloride. b)A single- displacement reaction of calcium metal with a nitric acid solution c)Burning of natural gas. d)The process of respiration. e)When a green iron salt is heated strongly, its color finally changes to black and odor of burning sulfur is given out.

Answer 1

Answer:

(a) P₄(s)+10Cl₂(g)→4PCl₅(s)

(b) 3Ca(s)+8HNO₃(aq)→3Ca(NO₃)₂(aq)+4H₂O(l)+2NO(g)

(c) CH₄(g)+2O₂(g)→CO₂(g)+2H₂O(l)+(∆H)

(d) C₆H₁₂O₆(aq)+6O₂(g)→6CO₂(g)+6H₂O(g)+(∆H)

(e) 2FeSO₄(s)→(∆H)→Fe₂O₃(s)+SO₂(g)+SO₃(g)

Answer 2

Answer and Explanation:

(i) P4 (s) + 10Cl2 (g) ———> 4PCl5 (S)

(i)CH4 (g) + 2O2 (g) ———> CO2 (g) + 2H2O(l) + heat energy

(iii) C6H12O6 (s) + 6O2 (g) + 6H2O

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