In most Acid-base reactions , what type of bond (ionic or covalent) is formed between the ions of the “salt”?

Chemistry

1 answer:

kap26 [50]3 years ago

8 0

Iconic bonds between ions of the salt (forms a crystal lattice) and electrons are transferred

ionic= transferred

covalent= shared

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NEED ASAP WILL GIVE BRAINLIST

inysia [295]

Answer:

It have 31 electrons

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The figure shows four forces exerted on a box.

lakkis [162]

F2 equals 10 N and F4 equals 2 N

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Draw the mechanism for the addition of methylmagnesium bromide to propanoyl chloride (CH3CH2COCl) to give 2-methyl-2-butanol.

Ghella [55]

Answer:

Reaction mechanism has been given below

Explanation:

Propanoyl chloride contains an electrophilic carbonyl center to give nucleophilic acyl substitution reaction by removing Cl group with a strong nucleophile like methylmagnesium bromide.
Two equivalent of methyl magnesium bromide react with cabonyl center followed by protonation of negatively charged oxygen atom gives 2-methyl-2-butanol.
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3 years ago

The pressure in a car tire is 178 kPa at 37°C. After a long drive, the pressure is 275 kPa. What is

dimaraw [331]

Answer:

T₂ = 478.93 K

Explanation:

Given that,

Initial pressure, P₁ = 178 kPa

Initial temperature, T₁ = 37°C = 310 K

Final pressure, P₂ = 275 kPa

We need to find the new temp of the air in the tire, assuming the volume is constant. We know that,

$\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{275\times 310}{178}\\\\T_2=478.93 K$

So, the new temperature is equal to 478.93 K.

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1) Chemical reaction: HCN + H₂O → CN⁻ + H₃O⁺.
c(HCN) = 2,2 M = 2,2 mol/L.
pKa(HCN) = 9,21.
Ka = 6,16·10⁻¹⁰.
[CN⁻] = [H₃O⁺] = x.
[HCN<span>] = 2,2 M - x.
</span>Ka = [CN⁻] · [H₃O⁺] / [HCN].
6,16·10⁻¹⁰ = x² / 2,2 M -x.
Solve quadratic equation: [CN⁻] = [H₃O⁺] = 0,0000346 M.
[HCN] = 2,2 M - 0,0000346 M = 2,199 M.

2) pH = - log[H₃O⁺].
pH = -log( 0,0000346 M).
pH = 4,46.
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pKb = pKw - pKa.
pKb = 14 - 9,21 = 4,79.

6 0

3 years ago