CHEM 1411 - CHAPTER 4 EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
How many moles of NaOH are needed to neutralize 15.0 mL of 0.235 M HCl solution? -
ANS 3.53 × 10^-3 moles
What is the correct formula for the precipitate formed between NaNO3 and mercury nitrate? -
ANS no reaction between NaNO3 and mercury nitrate
Write the net ionic equation for a reaction between a strong acid and strong base. -
ANS H+(aq) + OH-(aq) →H2O(l)
When balancing a chemical reaction, the following may need to be changed? -
ANS coefficients
What are the products of the reaction between barium hydroxide and hydrogen chloride? -
ANS barium chloride and water
If 23.6 g of hydrogen gas reacts with 28.3 g of nitrogen gas, what is the maximum amount of
product that can be produced? - ANS 34.4 g
Ozone, O3, is a product in automobile exhaust by the reaction represented by the equation
NO2(g) + O2(g) →NO(g) + O3(g). What mass of ozone is predicted to form from the reaction of
2.0 g NO2 in a car's exhaust and excess oxygen? - ANS 2.1 g O3
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, How many grams are in 12.5 moles of Ba(OH)2? - ANS 2.14 × 10^3 g
What precipitate forms when mixing silver(I) nitrate and sodium chloride? - ANS silver(I)
chloride
What is the limiting reactant in the combustion of 159 g of methane in an open atmosphere? -
ANS methane
What is the net ionic equation for the reaction between CoCl2 and an alkali hydroxide (like
lithium hydroxide)? - ANS Co2+(aq) + 2OH-(aq) →Co(OH)2(s)
What is the percent yield of a reaction if the actual yield is 34.2 g of the 42.4 g theoretical yield?
- ANS 80.6%
Classify the following type of reaction: NaCl(aq) + AgNO3(aq) →AgCl(s) + NaNO3(aq). -
ANS precipitation reaction
What is the correct name for the salt formed between KOH and HCl? - ANS potassium
chloride
How is a solid phase represented in a chemical reaction? - ANS (s)
The combustion of butane (C4H10) produced 0.0243 kg of carbon dioxide. What mass of butane
is required if the yield is 89%. - ANS 9.01 g
What salt is formed between LiOH and HBr? - ANS LiBr
Fewer steps are required to solve stoichiometry problems when - ANS the amount of
reactant is given in moles and the product is sought in moles.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
How many moles of NaOH are needed to neutralize 15.0 mL of 0.235 M HCl solution? -
ANS 3.53 × 10^-3 moles
What is the correct formula for the precipitate formed between NaNO3 and mercury nitrate? -
ANS no reaction between NaNO3 and mercury nitrate
Write the net ionic equation for a reaction between a strong acid and strong base. -
ANS H+(aq) + OH-(aq) →H2O(l)
When balancing a chemical reaction, the following may need to be changed? -
ANS coefficients
What are the products of the reaction between barium hydroxide and hydrogen chloride? -
ANS barium chloride and water
If 23.6 g of hydrogen gas reacts with 28.3 g of nitrogen gas, what is the maximum amount of
product that can be produced? - ANS 34.4 g
Ozone, O3, is a product in automobile exhaust by the reaction represented by the equation
NO2(g) + O2(g) →NO(g) + O3(g). What mass of ozone is predicted to form from the reaction of
2.0 g NO2 in a car's exhaust and excess oxygen? - ANS 2.1 g O3
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, How many grams are in 12.5 moles of Ba(OH)2? - ANS 2.14 × 10^3 g
What precipitate forms when mixing silver(I) nitrate and sodium chloride? - ANS silver(I)
chloride
What is the limiting reactant in the combustion of 159 g of methane in an open atmosphere? -
ANS methane
What is the net ionic equation for the reaction between CoCl2 and an alkali hydroxide (like
lithium hydroxide)? - ANS Co2+(aq) + 2OH-(aq) →Co(OH)2(s)
What is the percent yield of a reaction if the actual yield is 34.2 g of the 42.4 g theoretical yield?
- ANS 80.6%
Classify the following type of reaction: NaCl(aq) + AgNO3(aq) →AgCl(s) + NaNO3(aq). -
ANS precipitation reaction
What is the correct name for the salt formed between KOH and HCl? - ANS potassium
chloride
How is a solid phase represented in a chemical reaction? - ANS (s)
The combustion of butane (C4H10) produced 0.0243 kg of carbon dioxide. What mass of butane
is required if the yield is 89%. - ANS 9.01 g
What salt is formed between LiOH and HBr? - ANS LiBr
Fewer steps are required to solve stoichiometry problems when - ANS the amount of
reactant is given in moles and the product is sought in moles.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
