Question

compound important species present when dissolved in water type of compound (check all that apply) ionic molecular strong acid weak acid strong base weak base ch₃nh₂ ch₃nh₃⁺, oh⁻, ch₃nh₂, h₂o nai na⁺, i⁻, h₂o nh₃ nh₄⁺, oh⁻, nh₃, h₂o koh k⁺, oh⁻, h₂o

Explanation:

Step1: Analyze $CH_3NH_2$

$CH_3NH_2$ is a molecular compound. In water, it partially dissociates to form $CH_3NH_3^+$ and $OH^-$, so it is a weak base.

Step2: Analyze $NaI$

$NaI$ is an ionic compound. In water, it completely dissociates into $Na^+$ and $I^-$. It is neither an acid nor a base.

Step3: Analyze $NH_3$

$NH_3$ is a molecular compound. In water, it partially dissociates to form $NH_4^+$ and $OH^-$, so it is a weak base.

Step4: Analyze $KOH$

$KOH$ is an ionic compound. In water, it completely dissociates into $K^+$ and $OH^-$, so it is a strong base.

Answer:

compound	important species present when dissolved in water	ionic	molecular	strong acid	weak acid	strong base	weak base
$NaI$	$Na^+, I^-, H_2O$	$\checkmark$
$NH_3$	$NH_4^+, OH^-, NH_3, H_2O$		$\checkmark$				$\checkmark$
$KOH$	$K^+, OH^-, H_2O$	$\checkmark$				$\checkmark$