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lesya [120]
3 years ago
10

Identify and label the bronsted lowry acid, its conjugate base, the bronsted-lowry base, and its conjugate acid in each of the f

ollowing equations (a, b, ca, cb):
a. hbr h2o --> h30 br-
b. NO-2 H2o --> HNO2 OH-
Chemistry
1 answer:
ICE Princess25 [194]3 years ago
7 0

Explanation:

A bronsted lowry acid is any species that can donate a hydrogen proton (H+) to another molecule.

A bronsted lowry base is any species that can receive a hydrogen proton (H+) from another molecule.

a. hbr h2o --> h30+ br-

The Bronsted-Lowry acid is HBr

It's conjugate base is Br-

The Bronsted-Lowry base is H2O

It's conjugate acid is h30+

b. NO-2 H2o --> HNO2 OH-

The Bronsted-Lowry acid is H2O

It's conjugate base is OH-

The Bronsted-Lowry base is NO-2

It's conjugate acid is HNO2

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b,c,d

Explanation:

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3 years ago
1. Magnesium chloride solution reacts with silver nitrate solution to form magnesium nitrate
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a. 1,4332 g

b. 7.54~g

<h3>Further explanation</h3>

Given

Reaction

MgCl2 (s) + 2 AgNO3 (aq) → Mg(NO3)2 (aq) + 2 AgCl (s)

20 cm of 2.5 mol/dm^3 of MgCl2

20 cm of 2.5 g/dm^3 of MgCl2

Required

the mass of silver chloride - AgCl

Solution

a. mol MgCl2 :

\tt 20~cm^3=20\times 10^{-3}~dm^3\\\\mol=M\times V\\\\mol=2.5~mol/dm^3\times 20\times 10^{-3}DM^3=0.05

From equation, mol AgCl = 2 x mol MgCl2=2 x 0.05=0.1

mass AgCl(MW=143,32 g/mol)= 0.1 x 143,32=1,4332 g

b. mol MgCl2 (MW=95.211 /mol):

\tt mol=M\times V\\\\mol=\dfrac{2.5~g/dm^3}{95,211 g/mol}=0.0263~mol/dm^3

From equation, mol AgCl = 2 x mol MgCl2=2 x 0.0263=0.0526

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Explanation:

Consider these things:

If we try to solve x²+1 = 0, notice that we aren't able to solve the equation in Real Number system because there are no negative outputs for quadratic function.

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x-axis plane represents the solutions of that equation. If a graph intersects x-axis plane then it has a solution.

While a graph that doesn't have any intersects on x-plane, it means that the equation for that graph doesn't have real solutions but imaginary solutions.

As you may notice some of parabola graph has one intersect, two intersects or none. One intersect is one solution to the equation — Two intersects are two solutions of the equation and lastly, no intersects mean that no real solutions and remain only imaginary solution.

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