Question

1. When an acid reacts with a base, what compounds are formed? (1 point) a salt only water only metal oxides only a salt and water2. The formula of the hydrogen ion is often written as ____. (1 point) H2O+ OH+ H+ H4N+ 3. What is an acid according to Arrhenius? (1 point) a substance that ionizes to yield protons in aqueous solution a substance that is a hydrogen ion donor a substance that accepts an electron pair a substance that is a hydrogen ion acceptor 4. What is transferred between a conjugate acidbase pair? (1 point) an electron a hydroxide ion a hydrogen ion a hydronium ion 5. Which of the following represents a BrønstedLowry conjugate acidbase pair? (1 point) SO3 2and SO2 CO3 2and CO H3O and H2 NH4 + and NH3

Answer 1

1. $\boxed{\text{Salt and water}}$ are formed when an acid reacts with a base.

2. The formula of hydrogen ion is often written as $\boxed{\text{H}^+}$.

3. According to Arrhenius, an acid is $\boxed{\text{a substance that ionizes to yield protons in aqueous solution}}$.

4. $\boxed{\text{Hydrogen ion}}$ is transferred between a conjugate acid-base pair.

5. $\boxed{\text{NH}_4^+\text{and}\text{ }\text{NH}_3}}$ represent Bronsted Lowry acid base pair.

Further Explanation:

1. Acids have hydrogen ions in them that can combined with hydroxide ion of base. As a result, water is formed by combination of  $\text{H}^+$ and $\text{OH}^-$ ions. Also, anion of acid combines with cation of base and form salt. So salt and water are formed by combination of acid and base.

2. Symbol for hydrogen is H. It has only one electron in its valence shell. In order to form ion, this single electron is donated and cation is formed by removal of electron. So hydrogen ion is written as $\text{H}^+$.

3. Acids and bases are defined in accordance with three different theories. Arrhenius theory is one such theory that defines acids and bases on their behavior in aqueous solutions.

According to Arrhenius concept, substances that donate hydrogen ion or protons in solutions are termed as acids while substances that donates hydroxide ions in solutions.

4. Conjugate acid is counterpart of base while conjugate base is counterpart of acid. Conjugate base is formed by removal of hydrogen ions from acid and conjugate acid is formed by addition of hydrogen ions to base. Therefore hydrogen ion is transferred between conjugate acid-base pair.

5. Bronsted Lowry theory termed acids as species that are proton or hydrogen ion donor while bases are substances that act as proton or hydrogen ion acceptor. Since $\text{NH}_3}$ can easily accept hydrogen ions, it acts as Bronsted Lowry base. Similarly $\text{NH}_4^+$ can easily donate hydrogen ion to any other species, it acts as Bronsted Lowry acid. Therefore $\text{NH}_3}$ and $\text{NH}_4^+$ represent Bronsted Lowry acid base pair.

Learn more:

1. The reason for the acidity of water: brainly.com/question/1550328

2. Reason for the acidic and basic nature of amino acid: brainly.com/question/5050077

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Acid, base and salts

Keywords: salt, water, H+, hydrogen ion, Arrhenius, substance, acid, base, conjugate acid, conjugate base, Bronsted Lowry theory, hydroxide ion, cation, anion, NH3, NH4+.

Answer 2

Answer: 1) only a salt and water

An acid and base reacts together to undergo neutralization to form salt and water.

$HCl+NaOH\rightarrow NaCl+H_2O$

where HCl is an acid and NaOH is a base to form salt (NaCl) and water $(H_2O)$.

Answer: 2) The formula of the hydrogen ion is often written as $H^+$.

All acids dissociate in water to give  $H^+$ ions.

Answer: 3) Arrhenius acids are substances that ionizes to yield protons in aqueous solution.

$HCl\rightarrow H^++Cl^-$

Arrhenius bases are substance that ionizes to yield hydroxide ions in aqueous solution.

$NaOH\rightarrow Na^++OH^-$

Answer: 4) A conjugate acid base pair  transfers hydrogen ion.

$CH_3COO^-+H_2O\rightarrow CH_3COOH+H_3O^+$

Here $CH_3COO^-$ accepts a proton and thus act as a base and the corresponding $CH_3COOH$ is its conjugate acid.

Answer: 5) Bronsted Lowry acid is a substance that donates protons.  Bronsted Lowry base is a substance that accepts protons.

$NH_4^+$ and $NH_3$

$NH_3+H^+\rightarrow NH_4^+$

$NH_3$ is a acid which accepts proton and thus acts as base to form conjugate acid $NH_4^+$.