Question

10g lime stone when reacts completely with dilute HCl it produces Co, gas.If the reaction happens at 27°C, 780 mm
pressure then calculate the volume of that gas? (Ca=40, C=12, 0=16]​

Answer 1

ANSWER:

✏️CaCO3+2HCl→CaCl2+H2O+CO2

mCaCO3=10

MrCaCO3=40+12+16⋅3=100

n=mMr

nCaCO3=10100=0.1

✏️The amount of moles should be proportional to the coefficient in the reaction. Since both CaCO3 and CO2 have the same coefficient:

nCO2=0.1

MrCO2=12+16⋅2=44

mCO2=0.144=4.4g

✏️VOLUME OF THAT GAS=4.4g✌️✌️✌️✌️