Barium peroxide reacts with phosphoric acid to produce barium phosphate alongwith

Options

A. water
B. hydrogen peroxide
C. dioxygen
D. phosphine

Explanation

To solve the question regarding the reaction of barium peroxide with phosphoric acid, we will follow these steps:

### Step 1: Write the Reactants
Identify the reactants involved in the reaction. Here, we have:
- Barium peroxide (BaO2)
- Phosphoric acid (H3PO4)

### Step 2: Write the Expected Products
The question states that barium phosphate is formed. The chemical formula for barium phosphate is Ba3(PO4)2. Along with barium phosphate, we need to determine what else is produced.

### Step 3: Write the Balanced Chemical Equation
The unbalanced equation for the reaction can be written as:
\[ \text{BaO}_2 + \text{H}_3\text{PO}_4 \rightarrow \text{Ba}_3(\text{PO}_4)_2 + ? \]

To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides.

1. **Barium (Ba)**: There are 3 barium atoms in barium phosphate, so we need 3 BaO2.
2. **Phosphate (PO4)**: There are 2 phosphate groups in barium phosphate, so we need 2 H3PO4.
3. **Hydrogen (H)**: From 2 H3PO4, we get 6 H atoms.
4. **Oxygen (O)**: Count the total oxygen atoms.

The balanced equation becomes:
\[ 3 \text{BaO}_2 + 2 \text{H}_3\text{PO}_4 \rightarrow \text{Ba}_3(\text{PO}_4)_2 + 3 \text{H}_2\text{O}_2 \]

### Step 4: Identify the Byproduct
From the balanced equation, we can see that along with barium phosphate, hydrogen peroxide (H2O2) is produced.

### Conclusion
Thus, the answer to the question is that barium peroxide reacts with phosphoric acid to produce barium phosphate along with hydrogen peroxide.

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