Which of the following statements is true about a base in an aqueous solution?

Question

Which of the following statements is true about a base in an aqueous solution? — Exam MCQ

rrbjepyq.in · Accepted Answer

A. They produce OH- ions in water. — According to the Arrhenius definition, a base is a substance that increases the concentration of hydroxide ions (OH-) when dissolved in an aqueous solution. Formation of OH- can be shown as: NaOH(aq) → Na+(aq) + OH-(aq). Strong bases such as NaOH and KOH dissociate completely, releasing lots of OH-, while weak bases such as NH3 react with water to produce OH- only partially. Bases have a characteristic bitter taste and they feel slippery or soapy to the touch. Bases turn red litmus paper blue.

rrbjepyq.in · Answer

B. They have a sour taste.

rrbjepyq.in · Answer

C. They react with metals to produce hydrogen gas.

rrbjepyq.in · Answer

D. They turn blue litmus red.

Which of the following statements is true about a base in an aqueous solution?

📚 Related Questions — Acid, Base and Salts