Hello!
The chemical reaction for the dissociation of Formic Acid is the following:
HCOOH + H₂O ⇄ HCOO⁻ + H₃O⁺
From this reaction we can use the Henderson-Hasselbach equation to find the pH, but first we need to find the value for the pKa:
pKa=-log(Ka)=3,75
pH=pKa + log([HCOO⁻]/[HCOOH])
pH=3,75 + log (0,295/0,205)
pH= 3,90
Have a nice day!
Answer:
C. Magnetization of iron
Explanation:
This is a chemical change and cannot be undone by physical means therefore it isn't a physical change
The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. ... Because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products.
Answer:
a. Concave down
Linear increasing
b. Increases the reaction rate
c. The reaction approaches the saturation point of the enzyme
Explanation:
a. For the reaction with enzyme, the shape is concave down. The action of the enzyme on the preferred substrate is initially very rapid and decreases as the enzyme becomes saturated and the ratio of products to substrate increases to approach an equilibrium rate of reaction
For the reaction without enzyme, the shape is linear and increasing. Increase in the concentration of the substrate will increase the number of effective collisions that lead into product formation leading to an increased rate of the chemical reaction
b. The enzyme increases the proportion of effective combination of substrates to form the products
c. The curve of the reaction with enzyme flattens out because as the concentration of the substrate increases while that of the enzyme remains the same, the enzyme becomes saturated and less able to increase the rate of the reaction of the excess substrate.
7. An exothermic reaction
8. The bonds are forming
