Molerity and Acids And Concentration
What is Molarity?
Molarity is the amount of moles compared to liters.
What is the difference between exothermic and endothermic reactions?
Exothermic reactions release energy, Endothermic reactions absorb energy.
How do you calculate molar mass?
You multiply the atomic weight of each atom by the number of atoms there are.
What is the formula for density?
Density=mass/volume
what is reaction rate?
The speed of a reaction or how fast reactants become products.
What is the concentration of 1 liter of water?
55.56 mol
What is activation energy?
Energy required to start a reaction.
What does stoichiometry tell us?
Matter cannot be created or destroyed, but converted from one form to another.
what is M1V1=M2V2 used for?
It is used to calculate molarity.
what are the products of acids and bases?
Salt and Water.
What is a conjugate base?
It is a base with a hydrogen ion added.
What is activated complex?
an "in between" state when bonds are being broken and formed
How many moles are in 41g of Al?
1.52 Moles
What is an indicator used for?
To indicate when the acids and bases are equal
what formula is used to to calculate molarity?
Molarity= moles/volume.
Find the pH of a soda is 2.8. Find the H3O concentration of the soda.
-2.8=log y
What is enthalpy?
The measurement of energy in a thermodynamic system
How do you convert moves to particles?
You use avagadros number.
what is a catalyst?
speeds up the reaction by lowering the activation energy
what color does phenolphaline turn when the PH is at the right level?
Light Pink
6.8g of polonium trioxide is dissolved into 2.3 L of H20. What is the molarity of the solution?
.013 M
Which of the two reactions has a +Delta H and a -DeltaH
Exothermic- -Delta H
Exothermic- +Delta H
How many grams are in 17 moles of NaOH?
680g NaOH
what's a titration
the measured addition of a solution with a known concentration to a solution with an unknown concentration in order to calculate the concentration of the unknown
what is the molarity of a 38.0 mL HCL solution that is neutralized by 56.0 mL of 0.5 M NaOH?
Molarity: 0.74 M