Chemistry 101 Final Exam Practices Study Guide Q&A rated A 2026

Chemistry 101 Final Exam Practices
Study Guide Q&A rated A 2026
The reaction below is exothermic. Which of the following will occur if the


✅
temperature increases?
A(g) + B(g) ---- C(g) + D(g) - correct answer A and B increase.


What is the equilibrium constant for this reaction when the equilibrium
concentrations are 0.1908 moles of CO2, 0.0908 moles of H2, 0.0092 moles of CO,
and 0.0092 moles of H2 O?


CO2 + H2 → CO + H2 O - correct answer ✅ 0.0049


In which of the following scenarios will a precipitate form? - correct answer
the answers are correct.
✅
All




- When an insoluble product is produced in an aqueous reaction.
- When the ion product is larger than the solubility product.
- If the equilibrium equation shifts to the left because additional product ions are
added.


When the equation below is balanced and all coefficients are reduced to lowest


✅
whole number, what is the sum of all coefficients?
HI + KMnO4 + H2SO4 --> I2 + MnSO4 + K2SO4 + H2O - correct answer 31


In a reaction at standard temperature and pressure, 30g of sulfur reacts with 2L of
oxygen gas according to the balanced equation
S + O2 --> SO2

,Chemistry 101 Final Exam Practices
Study Guide Q&A rated A 2026
Which of the following statements is correct? - correct answer
excess by 0.846 mole.
✅ Sulfur is in




Under standard temperature and pressure, magnesium reacts with hydrochloric
acid to produce magnesium chloride and hydrogen.
Mg + 2 HCl --> MgCl2 + H2


is _____. - correct answer ✅
If 2.24L of hydrogen gas is produced, the moles of magnesium used in the reaction
0.10


A tetrachlorocuprate has formula CuCl4 2-.


correct answer ✅
What is the oxidation number of Copper and coordination number of the ion? -
O.N = +2 C.N = 4




called the _____ - correct answer ✅
In an electrolytic cell, the electrode at which the electrons enter the solution is
cathode.




✅
Which of the following is NOT a decomposition reaction? - correct answer
NaOH + HCl ---> NaCl + H2 O




experiment'? - correct answer ✅
Which of the following scientists discovered the electron charge using the 'oil drop
Robert Millikan


Who stated that matter is made of atoms? - correct answer ✅ John Dalton




Nitrogen has: - correct answer ✅
The mass number of Nitrogen is 14, and its atomic number is 7. Therefore,
7 neutrons

, Chemistry 101 Final Exam Practices
Study Guide Q&A rated A 2026


radii and the corresponding atomic radii is correct? - correct answer ✅
Which of the following relationships between the size of the anionic or cationic
Na+ < Na




found within: - correct answer ✅
Metalloids have both metallic and non-metallic properties. A few metalloids are
Group 14 and Group 15




answer ✅
Of the following choices, which has the highest ionization energy? - correct
Chlorine, Cl


The unit for rate of reaction is M/s for - correct answer
irrespective of the order.
✅
any reaction




The rate law relates the rate of reaction with - correct answer ✅concentration.


Consider the reaction X^2 + 2Y --> 2XY. The reaction occurs in a series of steps:
X^2 --> 2X fast


✅
X + Y --> XY slow
What is the rate equation for the above reaction? - correct answer Rate = k[X]
[Y]


Four experiments involving ideal gases are performed at different temperatures.

answer ✅
At which temperature will the kinetic energy of particles be highest? - correct
1800K