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When one mole of sodium chloride dissociates in water it produces?
When one mole of sodium chloride dissociates in water, it produces one mole of sodium ions (Na+) and one mole of chloride ions (Cl-). Each ion carries a single positive or negative charge respectively.
Is potassium hydroxide a strong or weak base?
yes, almost total dissociation in water, the more OH negative hydroxide ions in solution, the more basic the solution is.
What is an ion that is composed of only a single atom?
could be monatomic but many ions are comprised of multiple atoms - for example when sulfuric acid dissociates, one of the ions it yields is SO4-- (having trouble getting a superscript but the ion has a double negative charge)
What is negative 20 degrees Fahrenheit in Celsius?
°C = (°F − 32) × 5⁄9 °C = (-20 − 32) × 5⁄9 °C = -53 × 5⁄9 °C = -29.4 Therefore -20°F is equal to -29.4°C
Why does Hydrogen Chloride not conduct electricity when dissolved in hexane but conducts electicity when dissolved in water?
Water is a polar molecule and hexane is non-polar. This means that water has positive charges that grab on to the negative-chlorine and water has negative charges that grab onto the positive-hydrogen. This pulls the hydrogen and chlorine apart as positive and negative ions. The these positive and negative ions can move around separately as positive and negative electrical carriers. In hexane the hydrogen and chlorine are locked together, a single neutral molecule and no charged ions. Any positive movement of the hydrogen is locked to the negative movement of the chlorine, so any movement balances out to zero charge movement and zero electrical movement.
How calculate pH for a solution?
HCl is a strong acid and dissociates completely. Therefore it can be found using the equation: ph= -log [H+]
A substance that completely dissociates into its ions in solution?
A strong electrolyte is a substance that dissociates completely into positive and negative ions in its solution. Examples of strong electrolytes that are acids are hydrochloric and nitric acids.
What is the pH of a 5.7 x 10-2 M solution of HI?
The little 'p' means -log10 (that's the negative log to base 10). Thus pH means -log10(Hydrogen ion concentration) → pH of the solution = -log10(7.0 x 10-2) ≈ 1.15
What is the pH of a solution of 10 M HCl?
pH= minus 1 Because HCl is a strong acid it will dissociate completely in water to form hydronium ions. The pH can therefore be calculated by taking the negative log of the concentration. pH=-log10 =-1 Therefore the pH is negative one. This indicates that it is a very strong acid. This value is also applicable even though it is outside of the standard scale.
When Is an acid considered a strong acid?
A strong acid completely dissociates into its H+ ion and its negative ion in a 1.0M solution. For example, sulfuric acid, H2SO4, completely dissociates into its hydrogen ions, H+, and its sulfate ions, SO42-. The strong acids are as follows: hydrochloric acid, HCl, nitric acid, HNO3, sulfuric acid, H2SO4, hydrobromic acid, HBr, hydroiodic acid, HI, and perchloric acid, HClO4. (About.com chemistry)
What acid is not a strong acid?
The strength of an acid does not depend on how corrosive it is but by the degree to which it dissociates in water. A strong acid completely dissociates into ions, producing hydrogen (H+ ions) and negative ions that depends on the particular acid (HCl --> H+ + CL-, HNO3 -- H+ + NO3-). A weak acid only partially dissociates. The strong acids are: Hydrochloric acid (HCl) Hydrobromic acid (HBr) Hydroiodic acid (HI) Nitric acid (HNO3) Sulfuric acid (H2SO4) Perchloric acid (HClO4) Some lists also include periodic acid (HIO4) and chloric acid (HClO3) as strong acids. All other acids are assumed to be weak.
Are ions negatively charged?
You can have positive ions and negative ions. For example, take saltwater which dissociates into: Na+ & Cl- Typically the number positive charges and negative charges must balance.
What is the negative ion of lithium sulfide?
The negative ion of lithium sulfide is sulfide ion (S2-). This is formed when lithium sulfide (Li2S) dissociates into its ions in solution.
The Ability of writers to completely identify with their characters is?
The ability of writers to completely identify with their character is known as negative capability.
Why is sulphuric acid a stronger acid than ethanoic acid?
Sulphuric acid is a stronger acid than ethanoic acid because it completely dissociates in solution, releasing more hydrogen ions (H⁺) compared to ethanoic acid, which only partially dissociates. The high electronegativity of the sulfur atom in sulphuric acid stabilizes the negative charge on the conjugate base after dissociation, making it more favorable for the acid to release its protons. In contrast, the conjugate base of ethanoic acid (acetate) is less stable, resulting in a weaker acid overall. Therefore, the degree of ionization and the stability of the resulting species contribute to the strength difference between these two acids.
Why negative times positive equals negative?
when you multiply something you increase the value. therefore, when you multiply a negative by a positive, you'll get a negative.
When a strong acid dissolves in water how many molecules break apart?
All of them. The definition of a strong acid is a molecule that completely dissociates into hydrogen ions and a negatively charged ion in water. In contrast, a weak acid is a molecule that partially dissociates into hydrogen ions and a negative charge ion in water - you can find both the intact acid form (HA) and the ion forms (H+ and A-) in the water.
