Calculate equivalent weight of `H_(3)PO_(4)` and `Ca(OH)_(2)` on the basis of given reaction.
`H_(3)PO_(4)+ NaOH to NaH_(2)PO_(4)+ H_(2)O`
`Ca(OH)_(2)+ HCL to Ca(OH)CL+ H_(2)O`

Explanation

To calculate the equivalent weight of \( H_3PO_4 \) and \( Ca(OH)_2 \) based on the given reactions, we will follow these steps:

### Step 1: Determine the n-factor for \( H_3PO_4 \)

In the reaction:
\[ H_3PO_4 + NaOH \rightarrow NaH_2PO_4 + H_2O \]

- \( H_3PO_4 \) is an acid that can donate protons (H\(^+\)).
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