Give the general formula of alkynes. Identify the alkynes from the folowing:
`CH_4, C_2H_6,C_2H_2,C_3H_4, C_2H_4`

Give the empirical formula of C2H4

Give the empirical formula of C4H8

Give the empirical formula of N2H4

Give the empirical formula of C2H4Cl2

Give empirical formula of C6H12

Write IUPAC name of the following compound : CH_3 CHCl (CH_2)_2C Cl_2C_2H_5

Complete the following reaction : C_2H_4+ O_2 rarr

Complete the following reactions: C_2H_4 + O_2 rarr

Write IUPAC name of the following compound : CH_3C (p-ClC_6H_4)_2CH(Br) CH_3

Calculate the heat of formation of n butane from the following data: a. 2C_(4)H_(10)(g) +13O_(2)(g) rarr 8CO_(2)(g) +10H_(2)O(l), DeltaH = - 5757.2 kJ b. C(s) +O_(2) (g)rarrCO_(2)(g), DeltaH =- 405.4 kJ c. 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l), DeltaH =- 572.4 kJ