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Svet_ta [14]
3 years ago
15

Which volume of 2.0M NaOH(aq) is need to completely neutralize 24 milliliters of 1.0M HCl(aq)?(1) 6.0mL (2) 12mL (3) 24mL (4) 48

mL
Chemistry
1 answer:
krek1111 [17]3 years ago
5 0
The answer is (2) 12mL. The reaction equation is NaOH + HCl = NaCl + H2O. So the mol number of NaOH is equal to HCl. The concentration of NaOH is twice of HCl so the volume of HCl is twice of NaOH.
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The correct answer is C. The water is the solvent because the green pellets dissolved in it.

Explanation:

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What mass of HCL, in grams, is required to react with 0.610 g of al(oh)3 ?
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Explanation: Moles can be calculated by using the formula:

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Molar mass of Al(OH)_3 = 78 g/mol

\text{Number of moles}=\frac{0.610g}{78g/mol}

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Chemical equation for the above reaction follows:

Al(OH)_3+3HCl\rightarrow AlCl_3+3H_2O

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So, 0.0078 moles of Al(OH)_3 will react with \frac{3}{1}\times 0.0078 = 0.0234 moles

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Molar mass of HCl = 36.5 g/mol

Putting values in the equation, we get

0.0234moles=\frac{\text{Given mass}}{36.5g/mol}

Mass of HCl required will be = 0.8541 grams

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