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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
When ammonia acts as a acid?
When you make ammonia solution, following equilibrium is established-NH(3) + H(2)O NH(4)(+) + OH(-).The NH(4)+ ion can give H+ ion and hence will act as an acid.
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-
Is weak ammonia an acid or a base?
Weak ammonia is a base. When you dissolve ammonia in water. Water gives its H(+) to ammonia and become OH(-) anion. Ammonia becomes NH(4)(+) cation. As it is receiving H(+) ion, ammonia is basic.
What is the conjugate base of 4?
PO43- (phosphate) is the conjugate base of HPO42- (monohydrogen phosphate)
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 is the conjugate of x minus the square root of 2?
x plus the square root of 2
13 base 4 plus 13 base 4?
32 base 4
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.
What is 221 in base 4 plus 131 in base 4?
It is 1012 in base 4 or 70 in decimal.
What acts as an acid in the following reaction NH 3 plus PH 3 - NH 2- plus PH 4 plus?
As you have it written NH3 donates a proton to the solution and this hydrogen ion is picked up by PH3 to make PH4; so NH3 is the acid here. ( though this reaction seems odd to me )
Can you name NH plus 4?
I think this belongs in Chemistry NH3 is Ammonia and NH4 would be an ammonia ION which is called Ammonium
What is 6 plus 4 plus 3 equals 2 in baseball?
Double Play, Shortstop to Second Base to 1st base.
What is -4-3i divided by 4 plus i?
To divide by a complex number, write it as a fraction and then multiply the numerator and denominator by the complex conjugate of the denominator - this is formed by changing the sign of the imaginary bit of the number; when a complex number (a + bi) is multiplied by its complex conjugate the result is the real number a² + b² which can be divided into the complex number of the numerator: (-4 - 3i) ÷ (4 + i) = (-4 - 3i)/(4 + i) = ( (-4 - 3i)×(4 - i) ) / ( (4 + i)×(4 - i) ) = (-16 + 4i - 12i + 3i²) / (4² + 1²) = (-16 - 8i - 3) / (16 + 1) = (-19 - 8i)/17
What is the area of triangle if the base is x plus 4 and the altitude is 4 times its base?
Base = x + 4 Altitude = 4*base = 4*(x+4) Area = 0.5*base*altitude = 0.5*(x+4)*4*(x+4) = 2*(x+4)2
How many surfaces does a pyramid have?
Depends on the pyramid. Most have 4 surfaces (3 faces plus a base) The Mayan pyramids had 5 surfaces (4 faces plus a base).
