Question 17.
Balance the following equation stepwise.
H2S2O7(l) + H2O(l) → H2SO4(l)
Answer:
Balanced equation: H2S2O7 + H2O → 2H2SO4
Explanation:
⇒ Step 1: Write the given unbalance equation
H2S2O7 + H2O(l) 
H2SO4(l)
⇒ Step 2: Compare the number of atoms of reactants with the number of atoms of products.
⇒ Step 3: Now, if we multiply 2 in the products, we will get the equal number of atoms as reactants.
⇒ Write down the final balanced equation:
H2S2O7 + H2O → 2H2SO4
