Unformatted text preview: number of moles of H 2 will be thrown off. n (Mg) decreases therefore n (H2) decreases (conservation of moles n (Mg) = n (H2) ) the equation for calculating R value is, R = PV/nT. R and n are inversely proportional to each other. Therefore n value decreases, R value increases. 11 Ignoring the partial measurement of pressure of vapour water in the burette P (H2O) will affect the measured value of R because: P (H2) = P (gases) P (H2O) ignoring P (H2O) : P (H2O) = 0; P (H2) = P (gases) therefore the pressure value of H 2 : P (H2) will increase. We know: R = PV/nT R and P are proportional to each other. Therefore if P (H2) increases therefore R value increases....
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 Winter '10
 KRISTA
 Mole, Reaction, moles mass conservation

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