Acid Base Salt

How many times as basic is a pH of 10 than a pH of 8?

• 10X

• 100X

• 1000X

• 10000X

How many times stronger is an acid with a pH of 2 than 7?

• 100

• 1,000

• 10,000

• 100,000

Ocean water is only slightly basic. What might its pH value be?

• 5

• 8

• 12

• 2

When NaOH and HCl are mixed in equal molar quantities, the result is

• the formation of salt +H₂O

• the formation of salt +H₂(g)

• the formation of salt +O₂(g)

• All above are correct

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Incorrect statement about acids is/are

• they have bitter taste

• they changes the colour or red litmus to blue

• they changes the colour or blue litmus to red

• all above

Antacids contain

• weak base

• Strong base

• Strong acid

• weak acid

Three acidic solutions A, B and C have pH = 0, 3 and 5 respectively. Which solution has the highest concentration of H+ ions?

• A

• B

• C

• don't know

NH₃ + H₂O + CO₂ + NaCl gives

• NaHCO₃ + NH₄Cl

• NaHCO₃

• NH₄Cl

• NaHCO₃ + NH₄Cl+ H₂O

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student detected the pH of four unknown solutions A, B, C and D as follows: 11, 5, 7 and 2. Predict the nature of these solutions. Which one is neutral solution

• A

• B

• C

• D

The reaction of metal with acid results in the formation of-

• (a) only hydrogen gas

• (b) only salt

• (c) both salt and hydrogen gas

• (d) none of these

Tags

NGSS.MS-PS1-2