Question

In: Chemistry

1. A 5.00 x 10 ml balloon exerts a pressure of 1520 mmHg at 30.0°C. What is the pressure that the balloon exerts of the volume is increased to 7.00 x 10 ml at 40°C.

2. A sample of Argon gas occupies 65 ml at 22° C and 750 torr. What is the volume of this gas sample at STP?

3. Sketch the interaction between the ions of NaCl when dissolved in water.

Expert Solution

Answer :

(1) : use ideal gas equation

P1 * V1 / T1 = P2 * V2 / T2

Given , P1 = 1520 mmHg , V1 = 5 * 103 ml

T1 = 30°C = 303 K , T2 = 40°C = 313 K ,

V2 = 7 * 103 ml

P2 = (P1 * V1 * T2 ) / ( T1 * V2 )

P2 = ( 1520 * 5 * 103 * 313 ) / ( 303 * 7 * 103 )

= 1121.5 mmHg

Final pressure that balloon exerts = 1121.5 mmHg

(2) : Given, P1 = 750 torr , V1 = 65 ml , T1 = 22°C = 295 K

STP condition ( 1 atm , 0°C )

So, P2 = 1 atm = 760 torr

T2 = 0°C = 273 K

So, using ideal gas equation

V2 = ( P1 * V1 * T2 ) / ( T1 * P1 )

V2 = ( 750 * 65 * 273 ) / ( 295 * 760 ) = 59.36 ml

Volume of this gas sample at STP = 59.36 ml

queen_honey_blossom answered 2 years ago

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