Answer :
Final Answer:
1. The equivalent mass of Ba(OH)₂ is 85.67 g/equivalent
2. There are approximately 0.434 equivalents in 37.1 grams of Ba(OH)2.
Explanation:
The equation you've provided is a balanced chemical equation for the reaction between hydrochloric acid (HCl) and barium hydroxide (Ba(OH)2). From the equation, you can see that 1 mole of Ba(OH)2 reacts with 2 moles of HCl.
The molar mass of Ba(OH)2 is calculated as follows:
Molar mass of Ba(OH)2 = (1 * Molar mass of Ba) + (2 * Molar mass of O) + (2 * Molar mass of H)
Molar mass of Ba = 137.33 g/mol
Molar mass of O = 16.00 g/mol
Molar mass of H = 1.01 g/mol
Molar mass of Ba(OH)2 = (1 * 137.33) + (2 * 16.00) + (2 * 1.01) = 171.33 g/mol
The equivalent mass of a compound is its molar mass divided by its valency (number of equivalents of the compound that can react with 1 mole of electrons). For Ba(OH)2, each mole of it reacts with 2 moles of HCl, so its valency is 2.
Equivalent mass of Ba(OH)2 = Molar mass of Ba(OH)2 / Valency
Equivalent mass of Ba(OH)2 = 171.33 g/mol / 2 = 85.665 g/equivalent ≈ 85.67 g/equivalent
To calculate the number of equivalents in 37.1 grams of Ba(OH)2, you can use the formula:
Number of equivalents = Given mass / Equivalent mass
Number of equivalents = 37.1 g / 85.67 g/equivalent ≈ 0.434 equivalents
Therefore, there are approximately 0.434 equivalents in 37.1 grams of Ba(OH)2.
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