Question

A student placed 10 ml HCl and NaOH in two separate beakers. Subsequently,
4 ml of NaOH is added in Beaker 1, whereas 4 ml of HCl is added in Beaker 2 (as
shown in the figure). The student notes the possible change in pH in both
solutions. Which change in pH is correct? *
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Answer 1

Answer:

D reduce reduce

Explanation:

This is your answer

Answer 2

C is correct about the change in pH.

• pH range of 0 to 7 indicates acidic condition and 7 to 14 indicates the basic condition. An increase in hydronium ion concentration is an indicator of acidity while the increase in hydroxyl ion concentration is an indicator of basicity.
• Now, in beaker 1, hydronium ion concentration will decrease due to the neutralization reaction, while in beaker 2, hydroxyl ion concentration will decrease.
• Thus, beaker 1 will have increased pH and beaker 2 will have decreased pH.