1.Which of the following reactions is endothermic?a.CaCO3(s)→CaO(s)+CO2(g)\text{CaCO}_3(\text{s}) \rightarrow \text{CaO}(\text{s}) + \text{CO}_2(\text{g})CaCO3(s)→CaO(s)+CO2(g)b.Fe(s)+S(s)→FeS(s)\text{Fe}(\text{s}) + \text{S}(\text{s}) \rightarrow \text{FeS}(\text{s})Fe(s)+S(s)→FeS(s)c.NaOH(aq)+HCl(aq)→NaCl(aq)+H2O(l)\text{NaOH}(\text{aq}) + \text{HCl}(\text{aq}) \rightarrow \text{NaCl}(\text{aq}) + \text{H}_2\text{O}(\text{l})NaOH(aq)+HCl(aq)→NaCl(aq)+H2O(l)d.CH4(g)+2O2(g)→CO2(g)+2H2O(l)\text{CH}_4(\text{g}) + 2\text{O}_2(\text{g}) \rightarrow \text{CO}_2(\text{g}) + 2\text{H}_2\text{O}(\text{l})CH4(g)+2O2(g)→CO2(g)+2H2O(l)Login to continueOnly logged in users canattempt or see the solution.
