3 years ago

What are the balanced chemical equations for Hydrochloric acid and potassium hydroxide?

1 answer:

7 0

HCl(aq) + KOH(s) --> KCl(aq) + H2O(l)

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ipn [44]

I believe the answer is D

5 0

3 years ago

Semmy [17]

Hello!

datos:

Molarity = $2.0*10^{-4}\:M\:(mol/L)$

ps: The ionization constant of the nitric acid is strong (100% ionized in water) or completely dissociates in water, so the pH will be:

$pH = - log\:[H_3O^+]$

$pH = - log\:[2*10^{-4}]$

$pH = 4 - log\:2$

$pH = 4 - 0.30$

$\boxed{\boxed{pH = 3.70}}\end{array}}\qquad\checkmark$

Note:. The pH <7, then we have an acidic solution.

I Hope this helps, greetings ... DexteR!

3 0

3 years ago

lina2011 [118]

I think it's Letter c.13 if I'm not mistaken

3 0

2 years ago

Mrrafil [7]

2 C2H2 + 5 O2 --> 4 CO2 + 2 H2O

2.35 mol C2H2 - x mol O2
2 mol C2H2 - 5 mol O2

$x = \frac{2.35 \times 5}{2} = 5.875 \: mol$
answer: 5.875 mol

5 0

3 years ago

marin [14]

Answer:

0.249087

Explanation:

1.5 x 10^23 atoms x 1 mole / 6. 022 x 10^23 atoms

= 0.249087

3 0

3 years ago