Which ion is the only negative ion present in an aqueous solution of an Arrhenius base?(1) hydride ion (3) hydronium ion
(2) hydrogen ion (4) hydroxide ion

Answers

Answer 1

Answer: The correct answer is option 4. It is the hydroxide ions that is produced by an Arrhenius base in water. According to Arrhenius, acid-base reactions are characterized by acids which forms hydronium ions in water and bases which dissociates in aqueous solution to form hydroxide ions.

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Descreva as principais caracteristícas dos compostos ionicos

Answers

a) They are solid at ambient temperatures of 25 ° C and pressure of 1 atm.

b) Ionic compounds represent high temperature melting and boiling.

c) They are hard and brittle and then subjected to the impact, break easily, creating planar faces.

d) When dissolved in water, or pure liquid, carry electrical current due to the existence of ions that move freely and can be attracted by the electrodes, closing the electric circuit.

e) His solvent is water.

Classify the following as fluids or solids: warm butter, liquid nitrogen, paper, neon gas, ice.

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warm butter- liquid
Liquid nitrogen- gas
paper- solid
neon gas- gas
ice- solid

How many atoms of carbon are in the sample

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there are six atoms in the carbon

What will happen as an object receives energy due to heat flow? The molecules will move faster. The molecules will move more slowly.

Answers

The correct answer is the first option. If an object receives energy from heat flow, the molecules of that object will move faster because temperature and kinetic energy is directly proportional. As the heat is added, the temperature increases therefore increasing the kinetic energy of the molecules resulting to a faster motion.

The molecules will move faster

What characteristic is common to animals, plants, protists, and fungi?

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They All are Living things.

Which of these 1 M solutions will have the highest pH?(1) NaOH (3) HCl(2) CH3OH (4) NaCl

Answers

Answer:

(1) NaOH

Explanation:

NaOH, sodium hydroxide is a base. HCl, hydrochloric acid is an acid. CH3OH, methanol is an alcohol. NaCl, sodium chloride is salt.

pH below 7.0 is acidic, pH above 7.0 is basic, and pH at 7.0 is neutral.

Since NaOH is the only base in among the given compounds, its pH will above 7.0. Therefore, NaOH will have the highest pH.

Final answer:

NaOH solution will have the highest pH.

Explanation:

The solution with the highest pH would be the one that is basic, as basic solutions have higher pH values. Among the given options, NaOH is a strong base and dissociates completely in water to produce OH- ions, which makes the solution highly basic.