Question

WHAT MASS OF WATER WILL BE PRODUCED FROM 2.70 MOLES OF CA(OH)2 REACTING WITH HCI

Answer 1

Answer: The mass of water produced in the reaction is 97.2 grams

Step-by-step explanation:

We are given:

Moles of calcium hydroxide = 2.70 moles

The chemical equation for the reaction of calcium hydroxide and HCl follows:

`Ca(OH)_2+HCl\rightarrow CaCl_2+2H_2O`

By Stoichiometry of the reaction:

1 mole of calcium hydroxide produces 2 moles of water

So, 2.70 moles of calcium hydroxide will produce =
`(2)/(1)* 2.70=5.40mol` of HCl

To calculate mass for given number of moles, we use the equation:

`\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}`

Molar mass of water = 18 g/mol

Moles of water = 5.40 moles

Putting values in above equation, we get:

`5.40mol=\frac{\text{Mass of water}}{18g/mol}\\\\\text{Mass of water}=(5.40mol* 18g/mol)=97.2g`

Hence, the mass of water produced in the reaction is 97.2 grams