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vladimir2022 [97]
3 years ago
8

HCl, NaCl, and CO are all examples of chemical properties bonds formulas changes

Chemistry
1 answer:
Ainat [17]3 years ago
4 0

Answer:

HCL, NACL and CO are the examples of chemical formulas

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Addition of an excess of lead (II) nitrate to a 50.0mL solution of magnesium chloride caused a formation of 7.35g of lead (II) c
KiRa [710]

Answer:

[Cl⁻] = 0.016M

Explanation:

First of all, we determine the reaction:

Pb(NO₃)₂ (aq) + MgCl₂ (aq) → PbCl₂ (s) ↓  +  Mg(NO₃)₂(aq)

This is a solubility equilibrium, where you have a precipitate formed, lead(II) chloride. This salt can be dissociated as:

           PbCl₂(s)  ⇄  Pb²⁺ (aq)  +  2Cl⁻ (aq)     Kps

Initial        x

React       s

Eq          x - s              s                  2s

As this is an equilibrium, the Kps works as the constant (Solubility product):

Kps = s . (2s)²

Kps = 4s³ = 1.7ₓ10⁻⁵

4s³ = 1.7ₓ10⁻⁵

s =  ∛(1.7ₓ10⁻⁵ . 1/4)

s = 0.016 M

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3 years ago
Which of the following is not an example of a chemical change?
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D I think.. hopefully it helps a little
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2 years ago
What volume of a 1.50 m hcl solution should you use to prepare 2.00 l of a 0.100 m hcl solution?
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