question What type of reaction occurs when two compounds exchange positive ions to form new compounds

Chemistry

What type of reaction occurs when two compounds exchange positive ions to form new compounds?

A. Double displacement
B. Single displacement
C. Synthesis
D. Decomposition

Double displacement reactions involve the exchange of positive ions between compounds.

The compound CO₃²⁻ is commonly known as:

A. Carbonate
B. Chlorate
C. Chromate
D. Cyanate

The compound H₂SO₃ is commonly known as:

A. Sulfurous acid
B. Sulfuric acid
C. Hydrochloric acid
D. Hydrobromic acid

The Gibbs-Helmholtz equation relates the change in Gibbs free energy (ΔG) with:

A. Temperature
B. Pressure
C. Volume
D. Enthalpy

What is the balanced chemical equation for the reaction between sodium sulfide (Na₂S) and hydrochloric acid (HCl)?

A. 2Na₂S + 2HCl → 2NaCl + H₂S
B. Na₂S + HCl → NaCl + H₂S
C. Na₂S + 2HCl → 2NaCl + H₂S
D. Na₂S + HCl → NaCl + 2H₂S

The bond angle in a molecule with a trigonal planar electron domain geometry is approximately:

A. 120°
B. 109.5°
C. 180°
D. 90°

The compound PCl₅ is commonly known as:

A. Phosphorus pentachloride
B. Phosphorus trichloride
C. Phosphorus pentoxide
D. Potassium chloride

The term "adiabatic" comes from the Greek words meaning:

A. Not changing
B. Constant heat
C. Without heat exchange
D. Intense heat

The Antoine equation is used to describe the:

A. Ideal gas behavior
B. Vapor pressure of a substance
C. Heat capacity of a gas
D. Enthalpy change in a reaction

A reaction in which a compound gains electrons is known as:

A. Reduction
B. Oxidation
C. Hydrolysis
D. Esterification

Which of the following is a characteristic of a base?

A. Bitter taste
B. Turns blue litmus paper red
C. Releases H⁺ ions
D. Low pH