Which of the following compounds contains both ionic and covalent bonds? A. NaCl
B. CO
C. KI
D. NaOH

D.NaOH

Explanation:

The compound that contains both ionic and covalent bonds from the given choices is NaOH, sodium hydroxide.

An ionic bond is formed between a metal and non-metal. In this compound, the metal is the Na and non - metal is the OH. To form this bond type, an atom transfers its electrons to the non-metal to attain stability.

The radical group OH⁻ which acts as a single unit is made up of a covalent bond. It involves the sharing of electrons between two non-metals whose electronegativity difference is very similar to one another.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

you didnt put any of the following