Sodium pyrophosphate is represented by which of the following formula

Options

A. `Na_(2)P_(2)O_(4)`
B. `Na_(4)P_(2)O_(5)`
C. `Na_(2)P_(2)O_(7)`
D. `Na_(2)P_(2)O_(5)`

Explanation

To find the formula for sodium pyrophosphate, we can follow these steps:

### Step 1: Understand the Components
Sodium pyrophosphate is a compound made up of sodium (Na), phosphorus (P), and oxygen (O). It is important to know how many atoms of each element are present in the compound.

**Hint:** Identify the elements involved in the compound and their respective quantities.

### Step 2: Determine the Chemical Formula
The chemical formula for sodium pyrophosphate is Na4P2O7. This indicates that there are four sodium (Na) atoms, two phosphorus (P) atoms, and seven oxygen (O) atoms in the compound.

**Hint:** Look for the common chemical formulas of pyrophosphates to deduce the correct one.

### Step 3: Verify the Formula
To confirm that Na4P2O7 is indeed sodium pyrophosphate, we can break it down:
- The "Na" represents sodium.
- The "P" represents phosphorus.
- The "O" represents oxygen.
The subscripts indicate the number of each atom in the compound.

**Hint:** Cross-check the formula with known compounds to ensure accuracy.

### Step 4: Conclusion
Thus, the correct representation of sodium pyrophosphate is Na4P2O7.

**Final Answer:** Sodium pyrophosphate is represented by the formula **Na4P2O7**.

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