fix grammar only one setnece
As a result of effect of concentration on rate of reaction was clarify investigation further variable such as pressure would attribute to accuracy of the data.
As a result of the effect of concentration on the rate of reaction being clarified, further investigations into variables such as pressure would contribute to the accuracy of the data.
To fix the grammar in this sentence, you can make the following revisions:
"As a result, the effect of concentration on the rate of reaction was clarified, leading to further investigations into variables such as pressure that would contribute to the accuracy of the data."