Chemistry: The following solutions are added together: .5l of .5m hcl, 300 ml of .2m naoh, and 100ml of .4m ca(oh)2. calculate the concentration of the excess acid or base

The following solutions are added together: .5l

Ответ:

kmh05

14.01.2022

Chemistry

C=0.122M

Explanation:

Total volume:

V= 0.5 L + 0.3 L + 0.1 L=0.9 L

Total acid (H+) moles:

$n_{acid}=0.5 L * 0.5 mol/L=0.25 mol$

Total base (OH-) moles:

$n_{base}=0.3 L*0.2 mol/L + 0.1 L*0.4mol/L*2=0.14mol$

Excess acid:

$n_{ex}=0.25 mol - 0.14mol=0.11 mol$

Concentration:

$C=\frac{0.11mol}{0.9L}=0.122M$

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Ответ:

keigleyhannah30

30.11.2022

Chemistry

Fractional distillation is a method for separating a liquid from a mixture of two or more liquids. For example, liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points.

Explanation:

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The following solutions are added together: .5l of .5m hcl, 300 ml of .2m naoh, and 100ml of .4m ca(oh)2. calculate the concentration of the excess acid or base

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