Which would dissociate most readily in water?
compounds that are ionically bonded together
carbon-hydrogen chains, like saturated fats
compounds that are covalently bonded together
compounds with covalent and some polar covalent bonds
The Correct Answer is A
A. compounds that are ionically bonded together: Ionic compounds (like NaCl) dissociate easily in water because water's polarity can separate the positive and negative ions.
B. carbon-hydrogen chains, like saturated fats: These are nonpolar covalent compounds and are hydrophobic, so they don’t dissolve or dissociate well in water.
C. compounds that are covalently bonded together: Covalent bonds are strong and molecules remain intact in water; they don’t dissociate into ions.
D. compounds with covalent and some polar covalent bonds: These might partially dissolve but don’t dissociate readily into ions like ionic compounds do.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is E
Explanation
A. eicosanoids: Eicosanoids (like prostaglandins) are derived from arachidonic acid, not cholesterol.
B. fat soluble vitamins: These are vitamins A, D, E, and K, which are lipids but are not cholesterol-based structures.
C. phospholipids: Phospholipids have a glycerol backbone, fatty acids, and a phosphate group, not a steroid ring structure.
D. fats: Fats (triglycerides) are made of glycerol + three fatty acids, not cholesterol.
E. steroids: Steroids include cholesterol, testosterone, estrogen, and other hormones with a four-ring carbon backbone.
Correct Answer is C
Explanation
A. covalent: This is too general. Covalent bonds involve shared electrons, but do not specify if sharing is equal or unequal.
B. ionic: Ionic bonds involve transfer of electrons, typically between metals and nonmetals. Carbon and oxygen share electrons.
C. polar covalent: A polar covalent bond involves unequal sharing of electrons. Electrons spend more time around oxygen because it is more electronegative than carbon.
D. hydrogen: A hydrogen bond is an intermolecular force, not a bond between carbon and oxygen atoms.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.