Please help with all of these Calcium carbonate (limestone) decomposes into calc

Question

Please help with all of these Calcium carbonate (limestone) decomposes into calcium oxide (quicklime) and carbon dioxide. What is the percent yield when 24.8 g carbonate is heated to give 13.1 g calcium oxide? You need to write a balanced equation for the described reaction. LIMITING REAGENT PROBLEMS Limiting Reagent - reactant that is fully consumed in the reaction Excess Reactant - reactant that is left over after the chemical reaction Limiting Reagent Calculation Process: Determine moles of reactant Determine which chemical is the limiting reagent Use the number of moles of limiting reagent to determine the quantity of any reaction product 4 Fe + 3 O_2 rightarrow 2 Fe_2O_3 Given 4.0 grams of Fe and 3.5 grams of O_2, how many grams of iron (III) oxide can be made? Nitrogen gas and hydrogen gas react together to form ammonia (NH_3). Given 75.0 g of nitrogen and 45.0 g of hydrogen, how many grams of ammonia can be made? (write & balance equation)

Explanation / Answer

2)    CaCO3   ------------------> CaO      + CO2

       1 mol                          1 mol

       100 g                           56 g

   24.8 g                            ?

Then,

             ? = ( 24.8 g/ 100 g) x 56 g CaO

                = 13.888 g

This is the theoretical yield of CaO.

Given that actual yield of CaO = 13.1 g

Therefore,

percent yield = ( actual yield of CaO/theoretical yield of CaO) x 100

                   = ( 13.1 g /13.888 g) x 100

                   = 94.3 %

Therefore,

percent yield of CaO = 94.3 %

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.