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3 years ago

2. Which ions will form an ionic bond?

Chemistry

1 answer:

zysi [14]3 years ago

5 0

Answer:

D. a positive ion and a negative ion

Explanation:

Ionic bonds is formed from the attraction of opposite full charges. So a positive ion and a negative ion will make a ionic bond (Similar to how Na+ and Cl- ions make salt - which is basically a crystal of ions bonded via ionic bonds)

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Question 4

natka813 [3]

I can confirm that's the correct answer

5 0

2 years ago

If the value of Kc for the reaction is 2.50, what are the equilibrium concentrations if the reaction mixture was initially 0.500

ratelena [41]

Answer: The equilibrium concentration of sulfur dioxide, nitrogen dioxide, sulfur trioxide, nitrogen monoxide is 0.196 M, 0.196 M, 0.309 M and 0.309 M respectively.

Explanation:

We are given:

Initial concentration of sulfur dioxide = 0.500 M

Initial concentration of nitrogen dioxide = 0.500 M

Initial concentration of sulfur trioxide = 0.00500 M

Initial concentration of nitrogen monoxide = 0.00500 M

The chemical reaction follows:

$SO_2+NO_2\rightleftharpoons SO_3+NO$

Initial: 0.500 0.500 0.005 0.005

At eqllm: 0.500-x 0.500-x 0.005+x 0.005+x

The expression of equilibrium constant for the above reaction follows:

$K_c=\frac{[SO_3][NO]}{[SO_2][NO_2]}$

We are given:

$K_c=2.50$

Putting values in above equation, we get:

$2.50=\frac{(0.005+x)\times (0.005+x)}{(0.500-x)\times (0.500-x)}\\\\x=0.304,1.37$

Neglecting the value of x = 1.37, because change cannot be greater than the initial concentration

So, equilibrium concentration of sulfur dioxide = $(0.500-x)=(0.500-0.304)=0.196M$

Equilibrium concentration of nitrogen dioxide = $(0.500-x)=(0.500-0.304)=0.196M$

Equilibrium concentration of sulfur trioxide = $(0.00500+x)=(0.00500+0.304)=0.309M$

Equilibrium concentration of nitrogen monoxide = $(0.00500+x)=(0.00500+0.304)=0.309M$

Hence, the equilibrium concentration of sulfur dioxide, nitrogen dioxide, sulfur trioxide, nitrogen monoxide is 0.196 M, 0.196 M, 0.309 M and 0.309 M respectively.

4 0

3 years ago

A potassium ion (K+) would most likely bond with?

ivanzaharov [21]

It's most likely to bond with chlorine.

6 0

3 years ago

Suppose that you obtain 1.0 g of isopentyl acetate from reacting 1.0 mL of acetic acid with 1.0 mL of isopentyl alcohol. Calcula

Elden [556K]

Answer:

83.72%

Explanation:

The equation of of Reaction is given below;

CH3COOH + C5H11OH ------> CH3COOC5H11 + H2O. --------------(1).

The equation (1) shows that one mole of acetic acid react with one mole of isopentyl alcohol to give one mole of isopentyl acetate and one mole of water.

RATIO===> 1 : 1 ------> 1 : 1.

We are given 1.0 mL of acetic acid and 1.0 mL of isopentyl alcohol.

===> Things to know: The density of acetic acid = 1.05 g/cm^3 and the density of isopentyl alcohol= 0.809 g/cm^3, 1 mL = 1 cm^3, molar mass of isopentyl alcohol = 88.179 g/mol.

So, the density of acetic acid = 1.05 g/mL and the density of isopentyl alcohol= 0.809 g/mL.

Therefore, mass of acetic acid;

= 1.0 mL acetic acid ×( 1.05 g/ mL).

= 1.05 g acetic acid.

Mass of isopentyl alcohol= 1.0 mL × 0.809 g/mL = 0.809 grams isopentyl alcohol.

Since one mole of each reactants formed the product, we have to find the limiting reagent. This is done by converting the mass into moles.

Hence, for acetic acid; the number of moles = mass/molar mass.

===> 1.05 grams of acetic acid/ 60.052 g/mol.

===> 0.017485 moles acetic acid.

For isopentyl alcohol; 0.809/ 88.179 grams per mol.

==> 0.0091745 mol isopentyl alcohol.

We can see that isopentyl alcohol is the limiting reagent. So, 0.0091745 mole isopentyl alcohol will produce 0.0091745 mol isopentyl acetate.

Hence, the mass of isopentyl acetate= number of moles × molar mass= 0.0091745 × 130.19 grams per mol.

==> 1.19 grams isopentyl acetate.

FINAL STEP: calculating the percent yield. The actual yield is 1.0 g, theoretical yield = 1.19 grams

Percent yield = actual yield/ theoretical yield × 100.

Percent yied;

= 1.0 grams/ 1.19 grams × 100.

= 83.72 %.

8 0

4 years ago

A window washer does not want to change her position.

Mrrafil [7]

The answer should be C) Balanced because if she doesn't want to change spots/move, than she doesn't want to be in motion which means she wants to stay still and that would be balanced.

5 0

4 years ago

Read 2 more answers