Lab Day Name: Lab Time Lab Partner Pre-Lab Questions: Acids& Bases 1. a) Neutral
ID: 925878 • Letter: L
Question
Lab Day Name: Lab Time Lab Partner Pre-Lab Questions: Acids& Bases 1. a) Neutral water has a pH of 7.0. An acidic solution has a pH of: b) A basic solution has a pH of: or a 2. Two ways of measuring pH are by using concentration in a solution. To measure the pH measures the amount of acid or base the compound using the technique of 3. present, we measure the of 4. If the hydronium ion concentration is 2.50x 10* M, what is pH of this solution? 5. How many moles of base are in 35.49 mL of 0.215 M NaOH solution?Explanation / Answer
1.
a) less tham 7.0
b) more than 7.0
2. pH meter method and litmus paper method
3. a) hydronium ion ie, H3o+ or H+
b) pH
c) titration
4. pH=3.60
5. 7.63035 milimoles
4. Pink colour indicates the basic solution and when NaOH is added the solution in that small area temporarily become basic but as soon as the base dissolve it again become overall acidic hence pink disappear
5. A neutralization reaction is when an acid and a base react to form water and a salt.
6. when whole solution become pink permanently
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