Which of the following equations sums up photosynthetic reaction most accurately

Options

A. `CO+H_(2)O rarr CH_(2)O+O_(2)`
B. `6CO_(2)+6H_(2)O rarr C_(6)H_(12)O_(6)+6O_(2)`
C. `6CO_(2)+12H_(2)O rarr C_(6)H_(12)O_(6)+6O_(2)+H_(2)O`
D. `6CO_(2)+12H_(2)O underset("Chlorophyll")overset("Light")(rarr) C_(6)H_(12)O_(6)+6O_(2)+6H_(2)O`

Answer

To determine which equation sums up the photosynthetic reaction most accurately, we need to understand the overall process of photosynthesis. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand Photosynthesis
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process occurs in the presence of sunlight and chlorophyll, primarily in the chloroplasts of plant cells.

### Step 2: Write the General Equation for Photosynthesis
The general equation for photosynthesis can be summarized as follows:
\[ 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \]
This equation indicates that six molecules of carbon dioxide and six molecules of water, in the presence of light energy, produce one molecule of glucose and six molecules of oxygen.

### Step 3: Analyze the Given Options
Now, we will analyze the provided options based on the general equation:

1. **Option A**: Involves carbon monoxide - This is incorrect as carbon monoxide is not a reactant in photosynthesis and is harmful to plants.
2. **Option B**: 6 CO2 + 6 H2O → C6H12O6 + 6 O2 - This is almost correct but lacks mention of sunlight.
3. **Option C**: 6 CO2 + 12 H2O - This is incorrect because only 6 water molecules are used in the process.
4. **Option D**: 6 CO2 + 12 H2O - This is also incorrect for the same reason as option C, despite mentioning light and chlorophyll.

### Step 4: Identify the Best Option
From the analysis, **Option B** is the most accurate representation of the photosynthetic reaction, even though it does not explicitly mention sunlight. It correctly includes the reactants and products involved in the process.

### Conclusion
Thus, the most accurate equation summing up the photosynthetic reaction from the given options is:
\[ \text{Option B: } 6 \text{CO}_2 + 6 \text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \]

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