Question

question 3 of 19 chemistry: fundamentals and principles presented by macmillan learning classify the compounds as a strong acid, weak acid, strong base, or weak base. strong acid weak acid strong base weak base hbr nh₃ answer bank ca(oh)₂ hf h₃bo₃ hclo₄ csoh

Explanation:

Step1: Recall acid - base definitions

Strong acids completely dissociate in water, weak acids partially dissociate. Strong bases completely dissociate to give hydroxide ions, weak bases only partially react with water to produce hydroxide ions.

Step2: Classify given compounds

• $HBr$ is a strong acid as it completely dissociates in water to give $H^+$ and $Br^-$ ions.
• $HF$ is a weak acid as it only partially dissociates in water.
• $H_3BO_3$ is a weak acid as it is a boric acid and does not completely dissociate.
• $HClO_4$ is a strong acid as it completely dissociates in water to give $H^+$ and $ClO_4^-$ ions.
• $Ca(OH)_2$ is a strong base as it completely dissociates in water to give $Ca^{2 + }$ and $2OH^-$ ions.
• $CsOH$ is a strong base as it completely dissociates in water to give $Cs^+$ and $OH^-$ ions.
• $NH_3$ is a weak base as it only partially reacts with water to form $NH_4^+$ and $OH^-$ ions.

Answer:

Strong acid: $HBr$, $HClO_4$
Weak acid: $HF$, $H_3BO_3$
Strong base: $Ca(OH)_2$, $CsOH$
Weak base: $NH_3$