Question

multiple choice bubble the correct answer.
use the image below to answer questions 1 - 4.
reactants and products in two reactions
reaction a
reaction b

1. what is one of the products in reaction a?

a an ammonium ion
b an oxygen ion
c a hydronium ion
d a sodium ion

1. which product could contain a substance formed by reaction b?

a antacid
b milk
c baking soda
d dark chocolate

1. what is the most likely ph value for reaction b?

a 4
b 7
c 10
d 14

1. which is one of the reactants in reaction a?

a copper
b silver
c sodium
d water

Explanation:

1.

Step1: Analyze Reaction A products

In Reaction A, the products are \(NH_4^+\) (ammonium ion) and \(OH^-\).

2.

Step1: Analyze Reaction B products

Reaction B is \(HCl + H_2O
ightarrow H_3O^+ + Cl^-\). The product \(H_3O^+\) makes the solution acidic. Antacids are basic, milk has a pH around 6.5 - 6.7 (slightly acidic but not strong), baking soda (\(NaHCO_3\)) is basic. Dark - chocolate has some acidic components but not relevant here.

3.

Step1: Determine pH of Reaction B

Since Reaction B produces \(H_3O^+\) (from \(HCl + H_2O\)), it is an acidic reaction. pH = 4 is acidic (\(pH<7\) is acidic), pH = 7 is neutral, pH = 10 and 14 are basic.

4.

Step1: Identify Reactant in Reaction A

Looking at Reaction A: \(NH_3+H_2O
ightarrow NH_4^++OH^-\). The reactants are \(NH_3\) and \(H_2O\).

Answer:

1. A. an ammonium ion
2. No correct option (assuming there is a mistake in the options as the product of Reaction B (\(HCl + H_2O\)) is a strong - acid solution and none of the given options (antacid - basic, milk - slightly acidic but not from this reaction, baking soda - basic, dark chocolate - not relevant) are correct for a substance formed by this reaction. If we consider the general idea of a strong - acid product, maybe there is a misprint. But based on the given options, no correct match).
3. A. 4
4. D. water