7) the ph of a strong base would be closest to\noa) 0\nob) 7\noc) 14\n\n8) the ph of a strong acid would be…

7) the ph of a strong base would be closest to\noa) 0\nob) 7\noc) 14\n\n8) the ph of a strong acid would be closest to\noa) 0\nob) 7\noc) 14\n\n9) when testing a substance with ph/ litmus paper you observe that the paper turns red. what kind of substance\na) acid\nb) base\nc) neutral\n\n10) neutralization is a reaction between a(n).\na) salt and water\nb) base and salt\nc) acid and metal\nd) acid and base

7) the ph of a strong base would be closest to\noa) 0\nob) 7\noc) 14\n\n8) the ph of a strong acid would be closest to\noa) 0\nob) 7\noc) 14\n\n9) when testing a substance with ph/ litmus paper you observe that the paper turns red. what kind of substance\na) acid\nb) base\nc) neutral\n\n10) neutralization is a reaction between a(n).\na) salt and water\nb) base and salt\nc) acid and metal\nd) acid and base

Answer

Explanation:

Step1: Recall pH scale properties

The pH scale ranges from 0 - 14. A pH of 7 is neutral. Acids have pH values less than 7 and bases have pH values greater than 7.

Step2: Determine pH of strong base

A strong base has a high concentration of hydroxide ions and its pH is closest to 14. So for question 7, the answer is C.

Step3: Determine pH of strong acid

A strong acid has a high concentration of hydrogen ions and its pH is closest to 0. So for question 8, the answer is A.

Step4: Understand litmus - paper test

Blue litmus paper turns red in an acidic solution. So for question 9, the answer is A.

Step5: Recall neutralization reaction

Neutralization is a reaction between an acid and a base to form a salt and water. So for question 10, the answer is D.

Answer:

  1. C. 14
  2. A. 0
  3. A. acid
  4. D. acid and base