3 years ago

How many cm 3 are in 0.14 m 3?

Chemistry

1 answer:

nlexa [21]3 years ago

5 0

Answer:

There are 14 cm in 0.14 m

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<h3>Further explanation</h3>

Given

5.0% by mass solution of acetic acid

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Required

Solution

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$\tt M=\dfrac{\%mass\times \rho\times 10}{MW~acetic~acid}\\\\M=\dfrac{5\times 1.007\times 10}{60}\\\\M=0.839$

Ka for acetic acid = 1.8 x 10⁻⁵

[H⁺] for weak acid :

$\tt [H^+]=\sqrt{Ka.M}$

Input the value :

$\tt [H^+]=\sqrt{1.8\times 10^{-5}\times 0.839}\\\\(H^+]=0.00388=3.88\times 10^{-3}\\\\pH=3-log~3.88=2.41$

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