Question

For many purposes we can treat ammonia (NH) as an ideal gas at temperatures above its boiling point of -33. "C. Suppose the temperature of a sample of ammonia gas is lowered from 38.0°C to -9.0 °C, and at the same time the pressure is decreased by 10.0%. increase Does the volume of the sample increase, decrease, or stay the same? decrease X 5 ? stays the same If you said the volume increases or decreases, calculate the percentage change in the volume. Round your answer to the nearest percent.

Answer 1

Assuming NH₃ as ideal gas. T= 38°C - 38+2 73 2 311k. Let pressure P,=P volume V,= v T2 = -9°C = 273 + (-9) = 264k P = P - 10% of P (Pressure decreased) - P- O-IP by 10.1 -0.9P V₂ = ? we can equation apply ideal Gas Law » PXV = 0.9P X Y Z P XV - 2 311 - 264 264 x oxv = 0.943v. 0.9x 311 So volume of the sample of gai decreases Decrease in volume v-0.943 v = 0.057v y decrease - 0.057VX 100 5.7./.