Question

Mass of 25percent (w/w) HCl solution required to decompose 50g CaCO3 is

Answer 1

Answer:

Explanation

first find the molar mass of calcium carbonate

Mm[CaCO3]=40+12+16x3=100g

then number of moles

n=m÷mm

n=50\100=0.5mol

mole ratio

HCL:CaCO3

1:1

n:0.5

nHCL=0.5

FIND THE MOLAR MASS OF HCL ACID

AFTER U CALCULATE THE MASS

n=m/mm

the multply the mass by 25percent