Question

An element Z reacts with water to form a solution which turns phenolphthalein indicator pink. The element X is most likely to be:
A. Sulphur
B. sodium
C. carbon
D. silicon

Answer 1

Answer:

Sodium

Explanation:

Phenolphthalein is an indicator used in acid-base titrations. It turns colorless in acidic solutions and pink in basic solutions. Sodium is a metal which reacts with water to form sodium hydroxide, which is a base. Hence, phenolphthalein turns the solution pink.

HOPE THAT IT WAS HELPFUL!!!!

Answer 2

B. sodium

Explanation:

The question has a typographical error, where two different alphabets are used to denote one element. Assuming both the alphabets are Z, please find the answer below.

The element Z is sodium. Sodium reacts with water to form a solution of Sodium Hydroxide. The hydroxide ions (OH-) in sodium hydroxide will change the color of phenolphthalein into pink.

Option B is the answer.