Solution Found!
Which reactions are redox reactions?(a) Ba(NO3)2(aq) + K2SO(aq) ? BaSO4(s) + 2
Chapter 7, Problem 85P(choose chapter or problem)
Which reactions are redox reactions?
(a) \(\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}(a q)+\mathrm{K}_{2} \mathrm{SO}_{4}(a q) \rightarrow \mathrm{BaSO}_{4}(s)+2 \mathrm{KNO}_{3}(a q)\)
(b) \(\mathrm{Ca}(s)+\mathrm{Cl}_{2}(g) \rightarrow \mathrm{CaCl}_{2}(s)\)
(c) \(\mathrm{HCl}(a q)+\mathrm{NaOH}(a q) \rightarrow \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{NaCl}(a q)\)
(d) \(\mathrm{Zn}(s)+\mathrm{Fe}^{2+}(a q) \rightarrow \mathrm{Zn}^{2+}(a q)+\mathrm{Fe}(s)\)
Equation Transcription:
Text Transcription:
Ba(NO_3)_2(aq) + K_2 SO_4 (aq) right arrow BaSO_4 (s) + 2 KNO_3 (aq)
Ca(s) + Cl_2(g) right arrow CaCl_2 (s)
HCl(aq) + NaOH(aq) right arrow H_2 O(l) + NaCl(aq)
Zn(s) + Fe^2+ (aq) right arrow Zn^2+ (aq) + Fe(s)
Questions & Answers
QUESTION:
Which reactions are redox reactions?
(a) \(\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}(a q)+\mathrm{K}_{2} \mathrm{SO}_{4}(a q) \rightarrow \mathrm{BaSO}_{4}(s)+2 \mathrm{KNO}_{3}(a q)\)
(b) \(\mathrm{Ca}(s)+\mathrm{Cl}_{2}(g) \rightarrow \mathrm{CaCl}_{2}(s)\)
(c) \(\mathrm{HCl}(a q)+\mathrm{NaOH}(a q) \rightarrow \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{NaCl}(a q)\)
(d) \(\mathrm{Zn}(s)+\mathrm{Fe}^{2+}(a q) \rightarrow \mathrm{Zn}^{2+}(a q)+\mathrm{Fe}(s)\)
Equation Transcription:
Text Transcription:
Ba(NO_3)_2(aq) + K_2 SO_4 (aq) right arrow BaSO_4 (s) + 2 KNO_3 (aq)
Ca(s) + Cl_2(g) right arrow CaCl_2 (s)
HCl(aq) + NaOH(aq) right arrow H_2 O(l) + NaCl(aq)
Zn(s) + Fe^2+ (aq) right arrow Zn^2+ (aq) + Fe(s)
ANSWER:
Solution 85P
Step 1:
First let’s see what is a redox reactions :
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. Redox is a chemical reaction which involves both a reduction process and a complementary oxidation process, in which the oxidation states of atoms are changed.
We identify the reaction if its redox by the change in oxidation numbers. If an atom’s oxidation number increases, it is an oxidation reaction and if an atom’s oxidation number decreases, then it is a reduction reaction.