Chemical Reactions & Stoichiometry

Flashcards about balancing chemical reactions and reaction stoichiometry.

What is the central concept in chemistry that involves the change of one substance into another?

Chemical Reactions

What law states that matter cannot be created or destroyed?

The law of conservation of mass

What is the balanced equation when NH3 reacts with HCl?

NH3 + HCl → NH4Cl

What is the balanced equation when Butane (C4H10) combusts in the presence of oxygen gas?

2 C4H10 + 13 O2 → 8 CO2 + 10 H2O

What is the balanced equation when Manganese(IV) oxide produces manganese(II) chloride, chlorine gas, and water when mixed with HCl?

MnO2 + 4 HCl → MnCl2 + Cl2 + 2 H2O

What is the balanced equation when Ammonium nitrate decomposes into dinitrogen monoxide and water?

NH4NO3 → N2O + 2 H2O

What is the balanced equation when Nitrogen gas reacts with hydrogen gas to make NH3?

N2 + 3 H2 → 2 NH3

What is the balanced equation when Calcium oxide reacts with carbon dioxide?

CaO + CO2 → CaCO3

True or False: 3 mol S is produced for every mol H2S used in the reaction 2 H2S(g) + SO2(g)  3 S(s) + 2 H2O(g)

False

True or False: 3 g S is produced for every gram of SO2 consumed in the reaction 2 H2S(g) + SO2(g)  3 S(s) + 2 H2O(g)

False

True or False: 1 mol H2O is produced for every mol H2S used in the reaction 2 H2S(g) + SO2(g)  3 S(s) + 2 H2O(g)

True

True or False: The number of moles of products formed equals the number of moles of reactants consumed in the reaction 2 H2S(g) + SO2(g)  3 S(s) + 2 H2O(g)

False

True or False: The mass of the products formed equals the mass of the reactants consumed in the reaction 2 H2S(g) + SO2(g)  3 S(s) + 2 H2O(g)

True

What is the balanced equation for iron(III) oxide reacts with carbon to form iron and carbon monoxide?

Fe2O3 (s) + 3 C (s)  2 Fe (s) + 3 CO (g)

How many moles of iron(III) oxide are consumed in reacting with 4.80 mol carbon?

1.60 mol Fe2O3

How many moles of carbon are needed to form 3.6 mol Fe?

5.4 mol C