AP Chemistry Review Questions (part 3)

Which TWO are components of a buffer?

• Weak acid

• Strong acid

• Indicator solution

• Conjugate base

What do mass spec graphs show?

• Relative abundance of isotopes

• Number of valence electrons

• Energy to remove an electron

• Bond length between two atoms

At constant temp, decreasing the volume of a gas will cause the pressure to

• stay the same

• increase

• decrease

• depends on the gas

An exothermic reaction feels ____ and has a ___ ΔH​

• hot; positive

• cold; positive

• hot; negative

• cold; negative

Tags

NGSS.HS-PS3-1

In general, which type of substance has the lowest boiling point?

• metallic

• covalent network

• ionic

• covalent molecular

T or F: Increasing the temp of an exothermic equilibrium reaction will increase the amount of products.

• True

• False

Tags

NGSS.HS-PS1-6

Is this reaction exothermic or endothermic?

• endothermic

• exothermic

• Neither

• Not enough info

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

T or F: You do not need to consider the number of moles of electrons when calculating E^o_cell.

• True

• False

Tags

NGSS.HS-PS1-7

Drag from least precise (last) to most precise (first): ​ ​ ​ ​ ​

• beaker
• hydroflask
• buret
• graduated cylinder

T or F: ΔG^o is positive for a thermodynamically favorable reaction.

• True

• False