Question

Care gaz are densitatea relativa dupa aer egala cu 1,517

a) CO b)NO c)CO2 d)NO2

Answer 1

d(aer) = miu(gaz)/miu(aer)

miu aer = 28,9 g/mol

a)

miu(CO) = 28 g/mol

d = 28/28,9 = 0,97

b)

miu(NO) = 30 g/mol

d = 30/28,9 = 1,038

c)

miu(CO2) = 44 g/mol

d = 44/28,9 = 1,522

d)

miu(NO2) = 46 g/mol

d = 46/28,9 = 1,592

=> corecta este c)