Question

1. Match the missing coefficient to the correct number of molecules so that the equation adheres to the conservation of mass.

(X)N2 + (Y)H2 → (Z)NH3

Column A
1.
X
2.
Y
3.
Z
Column B
a.1
b.2
c.3


2. For each description, decide if it is describing an acid or a base.

Column A
1.
Tastes sour.
2.
Tastes bitter
3.
H2SO4
4.
LiOH
5.
pH above 7
6.
pH below 7
Column B
a. Acid
b. Base

Answer 1

### 1. Balancing the Chemical Equation

The chemical equation given is:

\[(X)N_2 + (Y)H_2 → (Z)NH_3\]

To balance the equation, we need to determine the values of \(X\), \(Y\), and \(Z\).

1. Each molecule of NH3 contains 1 nitrogen (N) and 3 hydrogens (H).
2. Since N2 has 2 N atoms, we will need 2 NH3 to get 2 N atoms on the right side.
3. To produce 2 NH3 (which gives 6 H atoms), we will need 3 H2 on the left.

Thus:

- \(X = 1\) (1 N2)
- \(Y = 3\) (3 H2)
- \(Z = 2\) (2 NH3)

So, the matches are as follows:

- 1. **X**: a. 1
- 2. **Y**: b. 3
- 3. **Z**: c. 2

### 2. Acid and Base Identification

Based on the descriptions provided, here are the identifications:

1. **Tastes sour**: a. Acid
2. **Tastes bitter**: b. Base
3. **H2SO4**: a. Acid
4. **LiOH**: b. Base
5. **pH above 7**: b. Base
6. **pH below 7**: a. Acid

So, the matches for Column A and Column B are:

- 1. (Tastes sour) → a. Acid
- 2. (Tastes bitter) → b. Base
- 3. (H2SO4) → a. Acid
- 4. (LiOH) → b. Base
- 5. (pH above 7) → b. Base
- 6. (pH below 7) → a. Acid