The formula of sulphamic acid is

Options

A. `H_2NSO_2`
B. `(NH_2)_2SO_2H`
C. `NH_2SO_2OH`
D. None of these

Answer

To determine the formula of sulfamic acid, we can follow these steps:

### Step 1: Identify the components of sulfamic acid
Sulfamic acid is known as amidosulfonic acid. This indicates that it contains an amine group (NH2) and a sulfonic acid group (SO3H).

### Step 2: Write down the components
From the name "amidosulfonic acid," we can deduce the following:
- The amine group contributes NH2.
- The sulfonic acid group contributes SO3H.

### Step 3: Combine the components
Now, we combine the amine and sulfonic acid groups:
- The formula can be represented as NH2SO3H.

### Step 4: Count the atoms
In the formula NH2SO3H:
- Nitrogen (N) = 1
- Sulfur (S) = 1
- Oxygen (O) = 3
- Hydrogen (H) = 3 (2 from NH2 and 1 from SO3H)

### Step 5: Write the final formula
The final formula of sulfamic acid can be simplified to:
- H3NSO3

Thus, the formula of sulfamic acid is **H3NSO3**.