Question 47
Write the formulae for the following and calculate the molecular mass for each one of them

(a) Caustic potash

(b) Baking powder

(c) Lime Stone

(d) Caustic soda

(e) Ethanol
(f) Common salt

Open in App

Solution

(a) Caustic potash
$K O H$
$(39 + 16 + 1) = 56 g m o l^{- 1}$

(b) Baking powder
$N a H C O_{3}$
$23 + 1 + 12 + (3 \times 16) = 84 g m o l^{- 1}$

(c) Lime Stone
$C a C O_{3}$
$40 + 12 + (3 \times 16) = 100 g m o l^{- 1}$

(d) Caustic soda
$N a O H$
$23 + 16 + 1 = 40 g m o l^{- 1}$

(e) Ethanol
$C_{2} H_{5} O H$
$2 \times 12 + (5 \times 1) + 16 + 1 = 46 g m o l^{- 1}$

(f) Common salt
$N a C l$
$23 + 35.5 = 58.5 g m o l^{- 1}$

Suggest Corrections

Similar questions

Question 47
Write the formulae for the following and calculate the molecular mass for each one of them

(a) Caustic potash

(b) Baking powder

(d) Caustic soda

(e) Ethanol

Write the chemical formula for Caustic potash. Also, calculate the molecular mass of Caustic potash.

Write the chemical name and formula of (a) common salt, and (b) caustic soda.

The chemical which is not required for the preparation of soap in the laboratory is :

(a) vegetable oil (b) baking soda (c) caustic soda (d) common salt

Write the chemical formula for the following and also calculate the molecular mass of baking powder.

Join BYJU'S Learning Program

Explore more

Join BYJU'S Learning Program