Question

question 13
1 pts
which of the following statements is true?
○ acids and bases will neutralize each other.
○ bases will increase the ph of a solution.
○ acids and bases cannot mix together.
○ acids, but not bases, can change the ph of a solution.
○ acids donate hydroxide ions (oh–); bases donate hydrogen ions (h+).

question 14
1 pts
each carbon atom can bond with as many as______ other atom(s) or molecule(s).
○ 5
○ 4
○ 1
○ 3
○ 2

Explanation:

Question 13

• Analyze each option:
• "Acids and bases will neutralize each other": Acids (donate \(H^+\)) and bases (donate \(OH^-\) or accept \(H^+\)) react in a neutralization reaction to form salt and water, so this is true.
• "Bases will increase the pH of a solution": Bases increase \(OH^-\) concentration, which actually increases pH (since pH = -log\([H^+]\) and \([H^+][OH^-]=K_w\)), but let's check others.
• "Acids and bases cannot mix together": They can mix and react (neutralization), so false.
• "Acids, but not bases, can change the pH of a solution": Both acids (lower pH) and bases (raise pH) change pH, so false.
• "Acids donate hydroxide ions (OH⁻); bases donate hydrogen ions (H⁺)": Acids donate \(H^+\), bases donate \(OH^-\) or accept \(H^+\), so false.
• The first option is correct as neutralization is a key reaction between acids and bases.

• Carbon has 4 valence electrons. To achieve a stable octet (or duet for valence shell), it can form 4 covalent bonds (sharing electrons) with other atoms/molecules. So each carbon atom can bond with up to 4 other entities.

Answer:

A. Acids and bases will neutralize each other.

Question 14