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Chemistry
Problem Which of the following equations is a redox reaction?
a. MgO ( s ) + 2 HCl ( aq ) → MgCl 2 ( aq ) + H 2 O ( l ) \text{MgO}(\text{s}) + 2\text{HCl}(\text{aq}) \rightarrow \text{MgCl}_2(\text{aq}) + \text{H}_2\text{O}(\text{l}) MgO ( s ) + 2 HCl ( aq ) → MgCl 2 ( aq ) + H 2 O ( l )
b. HCl ( aq ) + NaOH ( aq ) → NaCl ( aq ) + H 2 O ( l ) \text{HCl}(\text{aq}) + \text{NaOH}(\text{aq}) \rightarrow \text{NaCl}(\text{aq}) + \text{H}_2\text{O}(\text{l}) HCl ( aq ) + NaOH ( aq ) → NaCl ( aq ) + H 2 O ( l )
c. 2 NaOH ( aq ) + Cl 2 ( g ) → NaOCl ( aq ) + NaCl ( aq ) + H 2 O ( l ) 2\text{NaOH}(\text{aq}) + \text{Cl}_2(\text{g}) \rightarrow \text{NaOCl}(\text{aq}) + \text{NaCl}(\text{aq}) + \text{H}_2\text{O}(\text{l}) 2 NaOH ( aq ) + Cl 2 ( g ) → NaOCl ( aq ) + NaCl ( aq ) + H 2 O ( l )
d. MgCO 3 ( s ) → MgO ( s ) + CO 2 ( g ) \text{MgCO}_3(\text{s}) \rightarrow \text{MgO}(\text{s}) + \text{CO}_2(\text{g}) MgCO 3 ( s ) → MgO ( s ) + CO 2 ( g )
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