S2 Week 4: Unit 8 (Due 02-02-2025)

Front

Balance the equation: C7H16 + O2 → CO2 + H2O using the smallest possible integers. What are the coefficients?

Back

1; 11; 7; 8.

Front

Assign oxidation numbers to each atom in CO₂. What are the oxidation numbers?

Back

C = +4, O = −2

Front

Classify the reaction 5 CO(g) + I₂O₅(g) → I₂(g) + 5 CO₂(g). What type of reaction is this?

Back

redox reaction

Front

Name the acid HNO₂. What is its common name?

Back

nitrous acid

Front

Assign oxidation numbers to each atom in MnO₄⁻. What are the oxidation numbers?

Back

Mn = +7, O = −2

Front

What is the definition of a redox reaction?

Back

A redox reaction is a chemical reaction in which the oxidation states of atoms are changed, involving the transfer of electrons.

Front

What is the general formula for calculating oxidation states?

Back

The sum of the oxidation states in a neutral compound is zero; in a polyatomic ion, it equals the charge of the ion.

Front

What is the oxidation state of oxygen in most compounds?

Back

−2.

Front

What is the oxidation state of hydrogen in most compounds?

Back

+1.

Front

What is the definition of an acid according to the Brønsted-Lowry theory?

Back

An acid is a substance that donates protons (H⁺) in a chemical reaction.