How can i solve this exercise? **Educational Website Content:****Reaction of Alka-Seltzer Components**The fizz produced when an Alka-Seltzer tablet is dissolved in water results from the reaction between sodium bicarbonate (NaHCO₃) and citric acid (H₃C₆H₅O₇). The chemical equation for this reaction is:\[3 \text{ NaHCO}_3 \, \text{(aq)} + \text{ H}_3\text{C}_6\text{H}_5\text{O}_7 \, \text{(aq)} \rightarrow 3 \text{ CO}_2 \, \text{(g)} + 3 \text{ H}_2\text{O} \, \text{(l)} + \text{ Na}_3\text{C}_6\text{H}_5\text{O}_7 \, \text{(aq)}\]**Experimental Conditions:**In a particular experiment, 0.041 moles of sodium bicarbonate and 0.021 moles of citric acid were allowed to react.**Questions:**1. **Which chemical is the limiting reactant?** _Select an answer_2. **Which chemical is the excess reactant?** _Select an answer_3. **How much of the limiting reactant is left over when the reaction is complete?** __ moles4. **How much of the excess reactant is left over when the reaction is complete?** _(Record an answer in 2 significant figures; standard notation)_ __ moles

Limiting reagent is the one of the reactant whose amount is limited. During the reaction, limiting reagent is consumed first. The other reagent will be the excess reagent and it is excess in amount. Some amount of the excess reagent remains unreacted after the reaction. For example: Combustion of wood. In this chemical reaction, wood is the limiting reagent and oxygen is the excess reagent.The given balanced chemical equation is: 3NaHCO3(aq)+H3C6H5O7(aq)→3CO2(g)+3H2O(l)+Na3C6H5O7(aq) From this equation, it is clear that: 3 mol. of (baking soda)sodium bicarbonate reacts with -------- 1 mol. of citric acid. Given, 0.041mol of sodium bicarbonate. Then, 0.041mol. of sodium bicarbonate requires how many moles of citric acid? ⇒0.041mol. NaHCO3 × 1 mol of citric acid3 mol. of NaHCO3=0.0136mol citric acid is required. But provided 0.021mol of citric acid which is more than required. So, citric acid is the excess reagent. Hence, sodium bicarbonate is the limiting reagent which is consumed completely and consumed first during the reaction. No amount of limiting reagent remains after the reaction.The amount of excess reagent left over is: 0.021mol - 0.0136 mol = 0.0074mol0.0074mol of citric acid remains unreactedduring the reaction with 0.041mol of sodium bicarbonate.Answer: