Hs L2u3 18

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

What is the pH of a solution of 0.1 M HCl?

• 1

• 0.1

• -1

• 10

What is the [H⁺] if the pH is 4.0?

• 1.0 x 10^-10  M

• 1.0 x 10^-4  M

• 1.0 x 10^-14  M

• 1.0 x 10^-7  M

What is the [OH^-] if the [H⁺] is 1.0 x 10^-3M?

• 1.0 x 10^-3 M

• 6.02 x 10^-23 M

• 1.0 x 10^-14 M

• 1.0 x 10^-11 M

Which of the following shows the correct conjugate acid base pair?

• H₂O (base) / H₃O⁺ (conjugate acid)
• H₂O (acid) / CH₃COO^- (conjugate base)
• CH₃COOH (acid) / H₃O⁺ (conjugate base)
• CH₃COOH (base) / CH₃COO^- (conjugate acid)

• N_² added

• NH_³ removed

• H_² removed

• pressure increased

Tags

NGSS.HS-PS1-5

• N₂ added

• pressure decreased

• volume increased

• volume decreased

Tags

NGSS.HS-PS1-5

• catalyst added

• N₂ added

• temperature change

• volume increased

Tags

NGSS.HS-PS1-5

Weak Base

• NH₃

• KOH

• HCOOH

• HBr

What is the K_c expression for this reaction?
   2 NO_(g)  +  O_2(g) ⇌  2 NO_2(g)

• K_c = [NO₂]² / [NO]² [O₂]
• K_c =  [NO]² [O₂] / [NO₂]²
• K_c = [NO]² [O₂] [NO₂]²
• K_c = [NO₂]² / [NO]² +  [O₂]