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What does acetic acid contain?
Acetic acid's formula is CH3COOH, so it contains 4 hydrogen atoms, two carbon and two oxygen atoms.4 H2 C2 O
An acid has Ka 2.5 10 4 What is the Kb for the conjugate base of this acid at 25 C Kw 1.0 10 14 at 25 C?
4.0 x 10-11
An acid has Ka equals 2.5 x 10-4 what is the Kb for the conjugate base of this acid at 25C Kw equals 1.0 x 10-14 at 25C?
4.0 x 10-11
Phosphoric acid H3PO4 has three dissociable protons with pkas 2.14 and 6.86 and 12.4 which form of the acid predominates in a solution of pH 4?
pH = 4 is about in the middle (4.7) of the values pH=pKa,1 and pH=pKa,2.This is an indication of H2PO4- abundantly being present, becauseat pH=2.14 it is halfway forming its conjugate acid H3PO4 andat pH=7.21 it is halfway forming its conjugate base HPO42-
How many moles of copper will react with 4 moles of sulfuric acid?
4. The chemical equation is Cu + H2SO4 → CuSO4 + H2. Copper and sulfuric acid have the same coefficient (1), so the same number of moles of copper and sulfuric acid are used.
What is formula of conjugate acid of NH3?
During an equilibrium in the following reaction.NH(3) + H(2)O NH(4)(+) + OH(-)NH(4) has the ability to give an H+ ion to OH ion and hence is the conjugate acid.
What does acetic acid contain?
Acetic acid's formula is CH3COOH, so it contains 4 hydrogen atoms, two carbon and two oxygen atoms.4 H2 C2 O
Complex conjugate of 5i-4?
To get the complex conjugate, change the sign in front of the imaginary part. Thus, the complex conjugate of -4 + 5i is -4 - 5i.
An acid has Ka 2.5 10 4 What is the Kb for the conjugate base of this acid at 25 C Kw 1.0 10 14 at 25 C?
4.0 x 10-11
An acid has Ka equals 2.5 x 10-4 what is the Kb for the conjugate base of this acid at 25C Kw equals 1.0 x 10-14 at 25C?
4.0 x 10-11
Phosphoric acid H3PO4 has three dissociable protons with pkas 2.14 and 6.86 and 12.4 which form of the acid predominates in a solution of pH 4?
pH = 4 is about in the middle (4.7) of the values pH=pKa,1 and pH=pKa,2.This is an indication of H2PO4- abundantly being present, becauseat pH=2.14 it is halfway forming its conjugate acid H3PO4 andat pH=7.21 it is halfway forming its conjugate base HPO42-
How many moles of copper will react with 4 moles of sulfuric acid?
4. The chemical equation is Cu + H2SO4 → CuSO4 + H2. Copper and sulfuric acid have the same coefficient (1), so the same number of moles of copper and sulfuric acid are used.
What is the conjugate base of 4?
PO43- (phosphate) is the conjugate base of HPO42- (monohydrogen phosphate)
Does cobalt react with acid?
Yes, it does. The metal, Cobalt dissolves slowly in dilute sulphuric acid to form solutions containing the aqueous Co(II) ion together with hydrogen gas, H2. The equation is: Co (S) + H2So4 (aq) ---> Co^+2 (aq) + So4^-4 (aq) + H2 (g)
Is it possible to find the conjugate of a binomial with a division or multiplication sign in the middle?
No
What is the molicular weight of sulphuric acid?
The formula for pure sulfuric acid is H2SO4 The mass of the components in g/mol is: H2 = 1 x 2 = 2 S = 32 O4 = 4 x 16 = 64 Total = 98
What is the definition of a strong acid?
An acid (often represented by the generic formula HA [H+A−]) is traditionally considered any chemical compound that, when dissolved in water, gives a solution with a hydrogen ion activity greater than in pure water, i.e. a pH less than 7.0. That approximates the modern definition of Johannes Nicolaus Brønsted and Martin Lowry, who independently defined an acid as a compound which donates a hydrogen ion (H+) to another compound (called a base). Acids are described by a pKa which is essentially a hydrogen dissociation factor. Acids, discussed here in the general form HA, are proton (H+) donors and the pKa describes the dissociation behavior of that molecule. As a consequence, each acid exists in two species, the conjugate acid (HA) and the conjugate base (A-). When the pH is equal to the pKa of the molecule, the concentration of conjugate base is equal to that of conjugate acid and the molecule behaves in an acid/base equilibrium. A strong acid situation occurs when the molecule has completely dissociated to its conjugate base. As a consequence, every acid is considered a strong acid if the pH is 2 pH units higher or more than the pKa for the acid molecule. The 2 pH units is based on statistics. The best example is that of hydrochloric acid (HCl). The pKa of HCl is around -4. Since the pH scale is between 1 and 14, HCl completely dissociates regardless of the pH. For contrast, acetic acid has a pKa of about 4.76, and would act like a strong acid at pH's equal to or above 6.76, but would be a weak acid at all other pH's.
