Answer:
d. 380g
Explanation:
The reaction of production of hydrogen from zinc and HCl is:
Zn + 2HCl → ZnCl₂ + H₂(g)
At STP (1atm of pressure and 273.15K), 112L are:
n = PV /RT
n = 1atm×112L / 0.082atmL/molK×273.15K
<em>n = 5.00 moles </em>
That means you need to produce 5.00 moles of hydrogen. Based on the reaction, 1 mole of Zn produce 1 mole of H₂(g), as yield of reaction is 85%:
5.00 moles H₂(g) ≡ 5.00 moles of Zn / 85% = <em>5.88 moles of Zn you need</em>
As molar mass of Zn is 65.38 g/mol:
5.88 moles Zn × (65.38g /mol) = 384 g of Zn ≡ <em>d. 380g</em>
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I hope it helps!
<u>The </u><u>pH </u><u>of the solution is also </u><u>increased.</u>
<u></u>
What is pH and its importance?
- pH is an important quantity that reflects the chemical conditions of a solution.
- The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
- The pH is then calculated using the expression: pH = - log [H3O+].
- The solubility of an ionic compound is affected by the hydronium ion concentration.
- Addition of H₃O⁺ to the anion of a weak acid, increases the solubility of the ionic compound.
Therefore, the pH of the solution is also increased.
Learn more about pH
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Answer:
compound is formed .............