Solution:
Concept- (1) Placing one coefficient in front of the chemical formula with the highest level of complexity and the other coefficient behind it. prior to anything else so that each atom is equal on both sides.(2) Multiply each coefficient by the smallest number necessary to make them, if any fractional coefficients exist. In a reaction with a single fractional coefficient, the whole is frequently the denominator of the fractional coefficient.
We possess
NaCl's coefficient should be set to 2.
We get,
Hence, the correct answer is option (2).