Which solution reacts with LiOH(aq) to produce a salt and water?(1) KCl(aq) (2) CaO(aq) (3)NaOH(aq) (4)H2SO4(aq)

1 answer:

7 0

The answer is (4) H2SO4. The LiOH(aq) is a kind of base. The solution which can react with base and produce a salt and water is acid. Among the choices, only H2SO4 is acid.

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Solving: <span>According to the Law Avogradro, we have in 1 mole of a substance, 6.02x10²³ atoms/mol or molecules
</span>
1 mol -------------------- 6.02*10²³ molecules
y mol -------------------- 2.70*10²² molecules

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$y = \frac{0.270*\diagup\!\!\!\!\!\!10^{\diagup\!\!\!\!\!\!23}}{6.02*\diagup\!\!\!\!\!\!10^{\diagup\!\!\!\!\!\!23}}$
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Solving: <span>Find the mass value now
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40 g ----------------- 1 mol of NaOH
x g ------------- 0.04 mol of NaOH

$x = 40*0.04$
$\boxed{\boxed{x = 1.6\:g}}\end{array}}\qquad\quad\checkmark$

Answer:
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