Question

Study the equation given below.

$2Al+\left(X\right)H_2{SO}_4\to A{l}_2({SO}_4{)}_3+{3H}_2$

In the given equation, what does $X$ stand for?

• A. 2
• B. 3
• C. 1
• D. 5

Answer 1

Answer: (B)

3

It is a double displacement reaction in which Aluminum is a more reactive metal than hydrogen, so hydrogen is being displaced by Aluminum.

$2Al$+ $3H_{2}S{O}_4$ $\to$ $A{l}_2(S{O}_4{)}_3$ + $3H_2$

So $X$ stands for 3 and correct answer is option B