Question

which of the following chemical equations is balanced correctly?
o a. cl2 + nal --> 2nacl + l2
o b. b2o3 + 2c --> b4c + co
o c. c6h6 + o2 --> 2co2 + 3h2o
o d. cs2 + 3cl2 --> ccl4 +s2cl2

Explanation:

Step1: Check equation a

For \(Cl_2 + NaI\to2NaCl + I_2\), on the left - hand side: \(Cl = 2\), \(Na = 1\), \(I = 1\). On the right - hand side: \(Cl=2\), \(Na = 2\), \(I = 2\). The number of \(Na\) and \(I\) atoms is not balanced.

Step2: Check equation b

For \(B_2O_3+2C\to B_4C + CO\), on the left - hand side: \(B = 2\), \(O = 3\), \(C = 2\). On the right - hand side: \(B = 4\), \(O = 1\), \(C = 2\). The number of \(B\) and \(O\) atoms is not balanced.

Step3: Check equation c

For \(C_6H_6+O_2\to2CO_2 + 3H_2O\), on the left - hand side: \(C = 6\), \(H = 6\), \(O = 2\). On the right - hand side: \(C = 2\), \(H = 6\), \(O=4 + 3=7\). The number of \(C\) and \(O\) atoms is not balanced.

Step4: Check equation d

For \(CS_2+3Cl_2\to CCl_4+S_2Cl_2\), on the left - hand side: \(C = 1\), \(S = 2\), \(Cl=6\). On the right - hand side: \(C = 1\), \(S = 2\), \(Cl = 4+2 = 6\). The number of each type of atom is balanced.

Answer:

d. \(CS_2 + 3Cl_2\to CCl_4+S_2Cl_2\)